Narrow sense of digital currency in English

1. They are different
e-money: in fact, it is the electronization of legal currency, including our common bank card, online banking, e-cash, etc; There are also third party payments developed in recent years, such as Alipay and WeChat payment. No matter what the form of these electronic money is and through which institutions it circulates, its original source is the legal money issued by the central bank
virtual currency: virtual currency refers to non real currency, and its existence state is intangible. The most important difference between virtual currency and electronic currency in narrow sense is the difference of issuers. Virtual currency is the electronization of illegal currency, and its original issuer is not the central bank. For example, game currency, q-coin, and ticket counting are mainly limited to circulation in a specific virtual environment
digital currency: a digital currency that applies the latest digital network technologies such as blockchain and has the characteristics of Distributed Accounting, unique encryption technology and decentralized settlement. Of course, digital tools with these characteristics must be supported by national credit if they want to become sovereign currency or legal tender
commonly referred to as Q / currency and bitcoin, all belong to virtual currency. Compared with digital currency, the most fundamental difference lies in the difference of issuers. Virtual currency is the electronization of illegal currency. The issuer is not the central bank, and it can only circulate in a specific virtual environment, such as Tencent Q / currency and other game currencies; Digital currency can be used for real goods and services transactions, but only the digital currency issued by the state is legal digital currency, bitcoin is illegal digital currency.

2.

Generally, the excellent digital currencies are mostly imported procts, such as bitcoin, Leyte coin, ether coin and so on. However, the domestic Yuanbao coin, Ruitai coin, bitcoin and the tokens of different crowdfunding projects of European crowdfunding are excellent digital currencies

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digital currency (English: digital currency) is an alternative currency in the form of electronic currency. At present, no central bank of any government has indicated that it will issue digital currency, and digital currency does not have to have a benchmark currency and a central bank

it is different from the virtual currency in the virtual world, because it can be used for real goods and services transactions, not limited to online games. The early digital currency (digital gold currency) is a form of electronic currency named after the weight of gold. Today's digital currency, such as bitcoin, lightcoin and ppcoin, is an electronic currency created, issued and circulated by check sum cryptography

3. Okex is the digital currency trading platform with the largest trading volume in the world. Of course, it can trade bitcoin, not only bitcoin.

4. Friction is divided into static and sliding. The sliding friction is only related to the pressure and the roughness of the contact surface. The greater the pressure, the greater the sliding friction; The rougher the contact surface is, the greater the sliding friction is
the static friction varies according to the external force, but there is a maximum value, which is called the maximum static friction. The maximum static friction is slightly greater than the sliding friction
sometimes the friction can be obtained by force analysis.

5. First of all, you need to have your own account in fire coin, and then do a good job in security authentication. On this platform, you can observe the price of the coin, and you can sell it when the price is appropriate.