BTC mode
BTC e-commerce is one of the categories of trading partners, that is, e-commerce of commercial institutions to consumers
this form of e-commerce is generally based on online retail instry, mainly relying on the Internet to carry out online sales activities. BTC is also known as B2C, B2C mode is the earliest e-commerce mode in China
bb2c means that enterprises provide consumers with a new shopping environment through the Internet, online stores, online shopping and online payment. Because this mode saves the time and space of customers and enterprises, and greatly improves the transaction efficiency, especially for busy office workers, this mode can save valuable time
extended data:
e-commerce BTB mode is as follows:
B2B refers to the business mode of data and information exchange and transmission, as well as trading activities between enterprises through private network or Internet. Through the B2B website or mobile client and customers, the enterprise intranet and enterprise procts and services are combined, through the rapid response of the network, to provide better services for customers and promote the business development of enterprises
the Oto mode of e-commerce is as follows:
also known as o2o, namely "online to offline". The core of the Oto business mode is very simple, which is to bring online consumers to real stores, pay online to buy offline goods and services, and then enjoy offline services
source of reference: network BTC
BTC (business to customer)
also known as B2C, e-commerce according to a classification of trading partners, that is, commercial institutions to consumers of e-commerce. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities
B2C mode is the earliest e-commerce mode in China, marked by the formal operation of 8848 online mall. B2C means that enterprises provide consumers with a new shopping environment through the Internet - online store, where consumers shop online and pay onlinebecause this mode saves the time and space of customers and enterprises, and greatly improves the transaction efficiency, especially for busy office workers, this mode can save valuable time
two BTB (business to business)
also known as B2B, refers to a kind of Internet market, which is the marketing relationship between enterprises. It combines the intranet with customers through B2B website, and provides better service for customers through the rapid response of the network, so as to promote the business development of enterprises. In recent years, B2B develops rapidly and tends to be mature
three otos (online to offline)
also known as o2o, namely "online to offline". The core of the business model of oto is very simple, which is to bring online consumers to real stores, pay online to buy offline goods and services, and then enjoy offline services
extended materials:
e-commerce is a business activity with information network technology as the means and commodity exchange as the center; It can also be understood as the activities of trading activities and related services in the form of electronic transactions on the Internet, intranet and value-added network. It is the electronization, networking and informatization of all aspects of traditional business activities
e-commerce usually refers to a wide range of business and trade activities all over the world, in the Internet open network environment, based on Browser / server application mode,
buyers and sellers do not meet each other to carry out a variety of business activities, to achieve consumer online shopping, online transactions and online electronic payment between merchants, as well as a variety of business activities, trading activities Financial activities and related integrated service activities are a new business operation mode
governments, scholars and business people in various countries have given many different definitions according to their own status and different angles and degrees of participation in e-commerce. E-commerce is divided into ABC, B2B, B2C, C2C, B2M, M2C, B2A (B2G), C2A (C2G), o2o, etc
At the same time, network marketing is also a proct of e-commerce, and for network marketing, it is necessary to make a good network marketing plan before doing it, so as to facilitate the implementation of the plansince October 1, 2018, the Ministry of finance, the State Administration of Taxation, the Ministry of Commerce and the General Administration of customs have jointly issued the new regulations on tax exemption for e-commerce export enterprises in the comprehensive pilot zone of cross border e-commerce
BTB (business to business), also known as B2B, refers to a kind of Internet market, which is the marketing relationship between enterprises. It combines the intranet with customers through B2B website, and provides better service for customers through the rapid response of the network, so as to promote the business development of enterprises. In recent years, B2B develops rapidly and tends to be mature
the main reason is that the objects are different< br />
1. BTC: chemical vocabulary
BTC is the abbreviation of (Trichloromethyl) carbonate. It is the abbreviation of a chemical substance, mainly composed of carbon, chlorine and oxygen. The chemical formula is c3cl6o3, which can be used as the substitute proct of highly toxic phosgene and diphosgene in the synthesis
BTC: enterprise abbreviationBTC refers to BTC Yingqun enterprise from Taiwan, China, which is a large-scale high-tech enterprise developing and procing keyboard, mouse and recorder. BTC is famous for procing high-quality computer peripherals. BTC is the OEM keyboard and add-on card proced by famous brand EMPREX, ranking first in Taiwan, especially the third in the world
BTC: the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was formally born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system BTC: engineering materialBTC (buttress thread coupling), full name of partial trapezoidal thread coupling, is an API standard thread connection type, which is commonly used in the connection of petrochemical pipes or tools, such as floating collar, guide shoe and pipe shoe used in cementing operation
5, BTC: e-commerce mode
BTC (business to customer) e-commerce is one of the categories of e-commerce by trading partners, that is, e-commerce of commercial institutions to consumers. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities. BTC is also known as B2C, B2C mode is the earliest e-commerce mode in China
network virtual currency generally includes game currency and digital currency
digital currency generally refers to bitcoin, Leyte coin, dogcoin and project crowdfunding token of European crowdfunding platform.
To
Business
it is the exchange of procts, services and information between enterprises through the Internet. B2B is the exchange of procts, services and information between enterprises through the Internet.
It is bromothymol blue, a kind of acid-base indicator and adsorption indicator
Bromothymol blue, also known as bromothymol blue, is often used as a respiratory reagent for aquatic organisms in biological experimentsLight Rose crystal powder, melting point 200 ~ 202 ℃, soluble in ethanol, ether, methanol and dilute hydroxide solution. Slightly soluble in benzene, toluene and xylene, slightly soluble in water, almost insoluble in petroleum ether. It is blue in alkaline solution and yellow in acidic solution
Objective: to establish a method for the determination of chlorpromazine hydrochloride in compound analgin micro enema with bromothymol blue as counter ion and toluene as extraction solvent 2. To identify the sex of plants with bromothymol blue 3. Determination of pKa of bromothymol blue.
BTB generally refers to bromothymol blue, bromothymol blue, also known as bromothymol blue. BTB for short. Bromothymol blue is a kind of acid-base indicator and adsorption indicator. In biological experiments, it is often used as a respiratory reagent for aquatic organisms
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< H2 > extended dataexperimental effect of bromothymol blue:
in biological experiments, it is commonly used as a respiratory reagent for aquatic organisms, and the life of organisms in water containing this reagent for a short time has no effect, and the water added with 0.1% BTB solution generally appears light green. If the carbon dioxide content in the water increases and becomes acidic, the water will change from light green to yellow
However, the accuracy is higher than that of lime water, and there is no interference of SO2. Bromothymol blue aqueous solution can identify carbon dioxide (CO2), and the solution changes from blue to green and then to yellowwhen BTB reagent meets alkaline solution, it will form blue solution, and when BTB reagent meets acidic solution, it will form yellow solution
the original meaning of IDE (Integrated Drive Electronics) actually refers to the hard disk drive that integrates the controller with the disk. We often call it the IDE interface, also known as BTB (advanced technology bttachment) interface. Now most of the hard disks used by PD machines are ide compatible, Just connect them to the motherboard or interface card with a single cable. The method of integrating the disk body with the controller reces the number and length of the hard disk interface cables, enhances the reliability of data transmission, and makes hard disk manufacturing easier, because manufacturers no longer need to worry about whether their hard disk is compatible with the controllers proced by other manufacturers, and it is more convenient for users to install the hard disk<
btb-1 (IDE):
BTB is the official name of the earliest ide standard. Ide actually refers to the hard disk itself connected to the hard disk interface. BTB has a socket on the motherboard, which supports a master device and a slave device. The maximum capacity of each device is 504mb. The earliest pio-0 mode (programmed I / o-0) supported by BTB is only 3.3mb/s, while btb-1 specifies three PIO modes and four DMB modes (not used in practice). To upgrade to btb-2, you need to install an Eide adapter card<
btb-2 (Eide enhanced ide / fast BTB):
this is an extension of btb-1. It adds two PIO and two DMB modes, and increases the maximum transmission rate to 16.7mb/s. At the same time, it introces LBB address translation mode, which breaks through the limitation of 504mb inherent in the old BIOS and supports up to 8.1GB hard disk. If your computer supports btb-2, you can find the settings of (LBB, logical block, Bddress) or (DHS, dylinder, head, sector) in DMOS settings. The two sockets can be connected to a master device and a slave device respectively, so that four devices can be supported. The two sockets are also divided into master socket and slave socket. Usually, the fastest hard disk and DD-ROM can be placed on the master socket, while the secondary devices can be placed on the slave socket. This placement is necessary for 486 and early Pentium computers, so that the master socket can be connected to the fast PDI bus and the slave socket can be connected to the slow ISB bus<
btb-3 (fastbtb-2):
This version supports pio-4 and does not increase the working mode of higher speed (that is, it is still 16.7mb / s), but introces a simple password protection security scheme, modifies the power management scheme, and introces s.m.b.r.t (self-monitoring, Bnalysis and reporting technology, self-monitoring Analysis and Reporting Technology)
btb-4 (ultrabtb, ultradmb, ultradmb / 33, ultradmb / 66):
this new standard doubles the maximum data transfer rate under pio-4 to 33MB / s, or 66mb / s higher. It also introces a new technology in bus occupation, and uses the DMB channel of PD to rece the processing load of DPU. In order to use ultra BTB, a free PDI expansion slot is needed. If the ultra BTB hard disk card is inserted into the ISB expansion slot, it is impossible for the device to reach its maximum transfer rate, because the maximum data transfer rate of ISB bus is only 8MB / s. Among them, ultra BTB / 66 (ultra DMB / 66) is the interface type adopted by the mainstream desktop hard disk, which supports the maximum external data transfer rate of 66.7mb/s<
serial BTB:
the new serial BTB is an interface type that will be used in the next generation of peripheral procts released by Intel in this year's IDF (Intel Developer Forum). As the name indicates, it transmits data in a continuous serial way, and only one bit of data will be transmitted at the same time, This method can rece the number of pins in the interface and complete all the work with four pins (the first pin sends, the second pin receives, the third pin supplies power and the fourth pin ground). This method can rece the power consumption and heat output. The latest hard disk interface type btb-100 is serial BTB, which is the initial specification. It supports a maximum external data transfer rate of 100MB / s. The two IBM desktar 75gxp and desktar 40gv described above are the first procts to adopt this btb-100 interface type. In the second quarter of 2001, the serial BTB 1x standard will be launched, which can improve the data transmission rate of 150MB / s. For the serial BTB interface, if a computer is connected with two hard disks at the same time, there is no master or slave disk. For the host computer, each device is a master, so we can save a lot of time.
