What does the number of virtual currency star mean
in June 2013, 796 exchange took the lead in developing the bitcoin weekly delivery standard Futures - t + 0 two-way trading virtual commodity barter contract (contract trading) in the bitcoin instry
the emergence of contract trading ended the previous history that bitcoin could not be short, and opened the prelude to the development and prosperity of bitcoin derivatives market
warm tips: the above information is for reference only and does not represent any suggestions
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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
bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system. Bitcoin network will automatically adjust the difficulty of mathematical problems, so that the whole network will get a qualified answer about every 10 minutes. Then bitcoin network will generate a certain amount of bitcoin as block reward to reward the person who gets the answer
For example, gmv-h160wl / A has different meanings
Gmv stands for Gree online
H stands for house
160 represents the cooling capacity of 16kw
W stands for external machine
L stands for non molar side air outlet
A represents the design serial number
extended information:
1. Maintenance before startup
generally, household air conditioners will be shut down and out of service in September. It will open from May to June next year and stop running for more than half a year
therefore, a complete "diagnosis" must be made before the start of air conditioning, and the "trouble" of air conditioning equipment must be checked. According to the results of inventory, under the guidance of professional and technical personnel, cleaning and maintenance are in place, including outdoor and indoor machine shell, body, filter, and then start debugging, cooling speed and effect
2. Maintenance in the process of starting up
after the air conditioner is started up, the maintenance times in the process of starting up depend on environmental conditions, climatic conditions, starting time, surrounding st, air cleanliness, room cleanliness and other factors. The environmental conditions are poor, the weather is hot, the air conditioner is aging, and the starting time of the air conditioner is long. In the process of starting the air conditioner, the maintenance times are increased, usually about one and a half months
if the environmental conditions are good, the air conditioner is relatively new, there is less st in the air, the air conditioner can be started reasonably, and the electric fan can be used alternately, and the maintenance cycle can be extended appropriately. The air conditioner can be turned off for 1-2 times from the start of the air conditioner. The maintenance work should be conscientious and meticulous, leaving no dead end. Meet the standard, improve the refrigeration speed, refrigeration effect, energy saving, fresh, comfortable
3. Maintenance after shutdown
when the weather is warm, the air conditioner is turned on, the weather becomes cool, and the air conditioner is turned off, which is a perennial rule. Pay attention to a comprehensive and careful inspection of the indoor unit and outdoor unit before the air conditioner is turned off
maintenance, maintenance and cleaning are closely linked, which can not be touched and easy to leak. The link should be fastened and strictly checked. After completing the above link, the air conditioning mode should be set to prevent st pollution, prevent the air conditioning from dripping water, clean and then reuse, so as to clean, save energy and prolong the service life of air conditioning equipment. For the high-quality extension of famous brand, the cabinet machine should be protected to give full play to the effect of energy saving
星团
双语对照
词典结果：
star cluster[英][stɑ: ?kl?st?][美][stɑr ?kl?st?]
n.星团;
例句:
1.
Just below the orange star Gamma CB is an open star cluster known as Mel 111.