Beijing local low price digital currency stocks

1. The central bank's digital currency landing frequency exceeds expectations, and the phenomenal events in the blockchain field may comprehensively catalyze the application of blockchain in more scenarios; Key recommendations: Omar electric, Hang Seng electronics, Xinya Da, Haili Meida, Guangbo Co., Ltd., Feitian integrity, winwin; Suggestion: digital authentication.

2. The issue of digital currency can not only rece the high cost of traditional paper currency issue and circulation, but also better serve our virtual economy. Previously, bitcoin and other data currencies were legalized in California, and the Bank of England also considered issuing digital currency, which opened a good foundation for digital currency circulation. With the issuance of digital currency in China, the penetration rate of mobile payment will rise by leaps and bounds, and the enterprises that take the lead in the layout will have broad prospects for development
in the A-share market, the concept stocks related to mobile payment mainly include: Hengbao shares, new world, Tianyu information, Zhongke Jincai, national technology, new cape, new Guo, etc.

3. Hailimeda (002537): its main business is the development, proction and distribution of home appliance parts, auto parts, micro and special motors and motor parts; Precision mold development, design and manufacturing, is a strong domestic comprehensive strength of home appliance parts suppliers.

4. The so-called digital currency is MLM empty handed set white wolf

5.

To calculate the helical gear parameters, you need to know the basic parameters:

normal molus M_ n. Number of teeth Z, normal pressure angle α_ n. Helix angle β

generally, the crown height coefficient h * is 1, and the root height coefficient C * is 0.25. If there is displacement, it is necessary to calculate the displacement: x

the following is the basic parameter

end face molus: M_ t=m_ n/cos β

Calculation formula of pressure angle at the end face: Tan α_ t)=tan ( α_ t)/cos( β)

diameter of dividing circle: D = m_ n × z/cos( β)

addenm circle diameter: no displacement: Da = D + 2 × m_ n × H * with displacement: Da = D + 2 × m_ n × H * + x)

root circle diameter: no displacement: DF = D-2 × m_ n ×( H * + C *) with displacement: DF = D-2 × m_ n ×( H * + C * - x)

diameter of base circle: DB = D × cos α_ t)

in addition, there are more important dimensions, such as normal pitch, end pitch, etc., which can be obtained by referring to relevant manuals

Extended data:

judgment of helix rotation direction: first, we make the gear axis vertical, if the right height of helix is right rotation; On the contrary, the height on the left side of the helix is left-handed

end face and normal surface parameters:

end face: the plane perpendicular to the gear axis, and the parameters on the end face are generally added with subscript t

normal plane: the plane perpendicular to the helix, and the parameters on the normal plane are generally subscript n

(1) pitch and molus: = t= π

(2) pressure angle: generally, the parameters in normal plane are standard parameters

The correct meshing condition: the helix angle must be equal in size and opposite in direction. The normal molus m is equal to the normal pressure angle

B. geometric dimension calculation: in calculation, the calculation formula of spur gear can be directly applied to the end face of helical gear because a pair of helical gear transmission is equivalent to a pair of spur gear transmission on the end plane

there are many kinds of gear transmission, among which the efficiency of helical gear is very high, for example, the efficiency of spur gear transmission is lower than that of helical gear transmission

Like spur gear mechanism, helical gear can be used to improve the load capacity of transmission by recing the center distance a, which can be used for high-speed operation. Helical gear recer is a new type of recer. The helical gear recer is small in volume, light in weight and good in economy

Advantages:

(1) good meshing performance: the meshing process between helical cylindrical gears is an excessive process, and the force on the teeth is graally from small to large, and then from large to small; Helical gear is suitable for high speed and heavy load

(2) large coincidence degree: the increase of coincidence degree can improve the bearing capacity of gear. So the life of the gear is prolonged. The coincidence degree mainly depends on the meshing time, while the long meshing time and large contact area of helical gear rece the stress. The transmission is stable and the economy is increased

(3) compact structure: the less the minimum number of teeth, the more compact the structure

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7. Digital currency is basically illegal. Generally, there is no legal trading platform in China, and there is no so-called original stock of digital currency.

8. The central digital currency is now more than 50 yuan per share