direct current

direct current的音标是[dɪˈrekt ˈdrektʃʊm]；基本翻译是“直流电”；速记技巧是“di”谐音为“地”，“rect”谐音为“热”，连在一起可以记为“地热”产生“电流”。

Direct current（直流电）这个词的英文词源可以追溯到拉丁语“directus”和“currentus”，这两个词分别表示“直接”和“流动”。

它的变化形式主要有两种：单数形式为“direct current”，复数形式则变为“direct currents”。

相关单词包括：

1. Direct current generator - 直流发电机

2. Direct current motor - 直流电动机

3. Direct current supply - 直流供电

4. Direct current line - 直流线路

5. Direct current storage battery - 直流蓄电池

6. Direct current equipment - 直流设备

7. Direct current motor vehicle - 直流电机车辆

8. Direct current power - 直流功率

9. Direct current transmission - 直流传输

10. Alternating current and direct current - 交流电和直流电的比较

以上这些单词都与直流电的生成、使用和传输有关，体现了直流电在科技和工业领域的重要地位。直流电相对交流电，具有易于控制、转换效率高等优点，因此在一些特定领域，如电力、电子设备等领域仍然有广泛应用。

常用短语：

1. direct current generator

2. direct current circuit

3. direct current motor

4. direct current supply

5. direct current storage

6. direct current filter

7. direct current control

例句：

1. The direct current generator is used to convert mechanical energy into electrical energy.

2. The direct current circuit is a simple and reliable power supply system.

3. Direct current motors are widely used in industrial applications.

4. The direct current supply is essential for maintaining the operation of electronic devices.

5. The direct current storage battery can be used to store energy for future use.

6. The direct current filter can remove impurities from the electrical signal.

7. The direct current control system ensures precise regulation of the system parameters.

英文小作文：

Direct Current is a vital part of modern technology, playing a crucial role in the operation of electronic devices such as computers and mobile phones. It is also used in power systems to provide stable and reliable energy to various devices. Direct current generators convert mechanical energy into electrical energy, making it an ideal choice for remote or unreliable power sources. Direct current circuits are simple and reliable power supply systems that can be used to power various electronic devices. Direct current motors are widely used in industrial applications due to their high efficiency and low maintenance requirements. Additionally, direct current storage batteries provide a convenient way to store energy for future use, ensuring that devices remain operational even during periods of low or interrupted power supply. Finally, direct current filters are essential for removing impurities from electrical signals, ensuring the accuracy and reliability of electronic devices.