How much is a digital currency

1.

digital currency is an unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of a specific virtual community. More generally speaking, digital currency is actually a commodity

just like gold, it took more than 200 years to be graally recognized by the world. In the early days, many people questioned gold's ability to store value. If we take digital currency as a substitute, people's questioning attitude towards gold in the past is equivalent to many people's attitude towards digital currency now

extended data

digital currency is a balance between financial security and innovation ability. Financial instry should have clear access threshold. Digital currency involves finance, so it must have clear access threshold. The enterprise qualification of blockchain and digital currency needs to be reviewed and an access system set. One of the core of supervision is that blockchain enterprises must have qualified technical personnel

for example, enterprises of different levels in the construction instry need different levels and numbers of registered structural engineers to ensure the safety of buildings and bridges, which can also be used for reference in the supervision of digital currency. In addition, investors need to refer to the requirements of the "measures for the appropriateness of securities and futures investors" issued by the CSRC, and only those who meet certain conditions can participate in the investment

2.

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

3. The mainstream of legal digital currency trading platform is dcpro. Many people know about it and have formal supervision.

4. I've been pulled into several groups, but they're basically scheming. I've never seen a pure communication group. There are only two kinds of people who want you to pay es and software purchase fees first. If you listen to their losses, you'll ignore you. You'll be kicked out of the group made by the group makers. If you want to ship goods, you'll let the group Friends pick up the order foolishly. If you want to buy goods, you'll ask the group friends to sell foolishly. There are 500 people in a group, If each person has an average of 20000 working capital, the group leader will have 10 million stock capital. The trick is to set up a lot of trust in the group and thank the group leader just like thanking their parents for their upbringing. In fact, a swindler opens five or six QQ numbers and talks to himself. He uses image modification software to modify the transaction records and describes how the group friends get rich overnight, I once changed my trading record to more than 10 million trading volume. The swindlers thought that they had found a big fish and kept changing their QQ numbers to pull me. They used the rhetoric to cheat ignorant housewives, saying that China's Warren Buffett was providing reliable information for the group, saying that someone in the securities regulatory Commission recommended free stocks, which might rise or fall, Of course, when the price goes up, the group will take credit, but when the price goes down, they will not say a word. Some people ask and say that the follow-up of these stocks need detailed operation, and the detailed operation must be paid. If there is resistance against the masses, it is basically the life of being kicked out of the group.

5. In the first floor of the valley mine cave on the edge of viper Valley, we can see an NPC named shigongtou. As long as we click this NPC, we can enter the mine cave where we can dig. The deeper the mine cave, the higher the risk we will encounter, but the more abundant the relative rewards will become
we can go to the mine for half an hour every day through shigongtou. Although it's only a short half hour, it's the fastest way for novice players to earn Yuanbao. Because the difficulty of each level is different, it's recommended that players of level 35 or so can go to the third floor of the mine, while those of level 35 or below can go to the second floor of the mine, As for the first floor, because the shipment is too rubbish, it is not recommended that you go to mine
after entering the mine, we will find a large number of zombies around you. The zombie level of the third level is level 40. As long as our combat power is not too low, we can solve them very easily. Then we need to find a safe place to speed up mining. Here we recommend novice players to choose the corner, where we are not easy to be found by other players, It's only 2 zombies that can be refreshed at most once around, which is very easy for us to solve.

6. Digital currency and RMB have the same value. One yuan of digital currency is equal to one yuan of RMB. Their area is equal.

7. Well, you can cancel the order if you order the purchase and don't pay. If you don't have the payment point and have paid, the platform will seal your number

8. Exchange rate: according to market practice, it is usually composed of five significant figures. The last figure is called the basic point, which is the smallest unit of exchange rate change
for example: 1 euro = 1.1011 US dollars; 1 dollar = 120.55 yen
the euro against the dollar changed from 1.1010 to 1.1015, saying that the euro against the dollar rose by 5 points
the dollar against the yen changed from 120.50 to 120.00, saying that the dollar against the yen fell by 50 points
usually, if yen is not included in the currency pairs we see, then the fourth decimal fluctuation is 0.0001, which means the fluctuation is one point. If yen is included, then the second decimal fluctuation is 0.01, which means the fluctuation is one point

as for the calculation of key points, in foreign exchange margin trading, the fluctuation of one point is the fluctuation of US $10 under the premise of one standard hand, for example, the fluctuation of euro / US dollar from 1.1010 to 1.1011 is the fluctuation of US $10 under the premise of one standard hand (no matter whether you are long or short at this time, and no matter what the leverage ratio of your trading platform is)

9. The proposal is dcpro, which is a formal regulation and can rece the risk