3 bitcoin

1.

"Gold and silver are not money naturally, but money is gold and silver naturally." this is a sentence Marx said about money

How to understand? In fact, it is very simple that money is the inevitable proct of the development of human life. In the earliest stage, gold and silver were only used as a kind of metal or a kind of ordinary commodity to exchange things. However, with the development of society, people find that gold and silver are easy to separate, easy to preserve, easy to carry and other advantages, so the suitability of gold and silver as currency is reflected, and naturally evolved into currency

What about bitcoin

2. Fire coin network, okcoin and coin security network are the three major bitcoin trading platforms in China. Due to the high risk of bitcoin trading, it is recommended to choose carefully for users with immature investment experience

warm tips: the above explanations are for reference only, without any suggestions. There are risks in entering the market, so investment should be cautious. Before making any investment, you should make sure that you fully understand the nature of the investment and the risks involved in the proct. After a detailed understanding and careful evaluation of the proct, you can judge whether to participate in the transaction
response time: December 2, 2020. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
https://b.pingan.com.cn/paim/iknow/index.html

3. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially 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. Unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of money circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity

warm tips:
1. The above explanations are for reference only, without any suggestions
2. It is risky to enter the market and investment should be cautious
response time: February 25, 2021. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
https://b.pingan.com.cn/paim/iknow/index.html

5. Small grinding machine generally uses squirrel cage motor with limited torque hydraulic coupling, which has high economic performance. Squirrel cage motor is characterized by high speed and low torque, but it is usually started by soft starter. This device can make the motor start under no-load, and connect the mill when it reaches the rated speed. At present, the main soft drive devices are: hydraulic coupling, electromagnetic clutch, pneumatic clutch and liquid viscous clutch. The advantages of applying the hydraulic coupling are as follows: first, it provides the starting ability of the motor and improves the acceleration performance; Second, the motor can start without load, which reces the starting current and shortens the ration of starting current. The hydraulic coupling is mature and reliable, heat-resistant and st-resistant, and has low requirements for the use environment and maintenance technical conditions. It can be operated for a long time without maintenance. Many mills with hydraulic coupling have achieved remarkable energy saving effect. There are three kinds of common ball mill speed control drive, some large mills abroad use speed control drive, which can save the gear drive. The following are several speed regulating mills driven by synchronous motors 1) Loop type. In this structure, the motor is installed on the shell of the mill, and the stator of the motor surrounds the mill. Its advantage is that it occupies the least space, but its disadvantage is that the motor must cooperate with the mill, so it can not make the most effective use of materials, and the motor is exposed to the mill environment 2) Suspended. The structure adopts an external suspension type synchronous motor rotor supported on the tubular torsion extension of the mill. As long as the required speed and torque characteristics are considered, the motor is not restricted by the shape of the mill, and is less exposed to the environment of the mill 3) Direct connection type. This structure adopts a direct connected synchronous motor. Its advantage is that the utilization rate of motor materials is the highest and the parts exposed to the mill environment are the least. Its main disadvantage is that it increases the floor area. In addition, the electrical system can also be used to speed the mill with gear transmission, so as to simplify the mechanical transmission system. Such as the use of DC speed control system, AC frequency control system. http://www.hxjqxk.com/n251.html

6. 1.
of course, the minimum transaction unit of bitcoin is 0.0001<
2.
this platform can trade web links in pure Chinese. At present, the value of three bitcoins is about 3W US dollars!

7. How to calculate the purchase price of RMB 5000 for us $36000 bitcoin
(5000 x a) / 36000 = 0.0218

A is the ratio of RMB to us dollar at that time (that is, the exchange rate of RMB to us dollar at that time)
A = 0.15696
the exchange rate of RMB to us dollar on January 20, 2021 is 0.154304