关于"推销电器"的英语作文范文3篇，作文题目：Selling electrical appliances。以下是关于推销电器的专业英语范文，每篇作文均为满分范文带翻译。
高分英语作文1：Selling electrical appliances
The protection of power transformer can be divided into two categories: anti overload and short circuit (grounding may or may not be involved; the main protection of power transformer is usually performed by differential relay gas relay installed in main oil tank and on load tap changer box c) and safety device for decompression; on the other hand, non directional over-current relay with reverse or reverse time curve is usually used to provide backup Protection. In most cases, the over-current relay also has instantaneous device over-current, and the differential relay shall be powered by an independent current transformer. The operation of any of the above relays shall trip the circuit breaker responsible for disconnecting the power transformer to avoid unnecessary de energization and these relays shall not operate under Magnetization transients or permissible overload conditions.
Gas and differential relays are considered to be selective and therefore their characteristics usually imply the necessity of transformers and maintenance. Therefore, when they detect a fault, they not only send a trip signal to the circuit breaker to interrupt the fault, but also lock the circuit breaker in the open position by locking the relay, because the undirected over-current relay may operate in the event of an external fault, They switch the circuit breaker to the off position only through the operation of the auxiliary relay. A typical protection scheme is shown in the figure, part of the above mentioned protection device is provided with transformer C, VS) and components are installed on the panel located in the substation control room.
For more information on these relays and power transformer protection systems, see: cvscvs.
中文翻译：
电力变压器的保护可分为两类：抗过载和短路（可能或不涉及接地，电力变压器的主要保护通常由安装在主油箱和有载分接开关箱C中的差动继电器气体继电器执行）和用于减压的安全装置另一方面，通常采用具有反向或反向时间曲线的无定向过流继电器来提供后备保护。在大多数情况下，过流继电器也有瞬时装置过电流，差动继电器应由的电流互感器供电。任何上述继电器的运行都应使负责断开电力变压器的断路器跳闸，以避免不必要的断电，这些继电器不应在磁化瞬态或过载可容许的情况下运行。
气体和差动继电器被认为是选择性的，因此，其特性通常意味着变压器和维护的必要性因此，当它们检测到故障时，它们不仅向断路器发送跳闸信号以中断故障，而且还通过锁定继电器将断路器锁定在断开位置，因为当外部故障时，无定向过流继电器可能会运行，它们只通过辅助继电器的操作将断路器切换到断开位置。图中显示了典型的保护方案，前面提到的保护装置的一部分与变压器C一起提供，VS）和部件安装在位于变电站控制室的面板上。有关这些继电器和电力变压器保护系统的更多信息，请参阅：CVSCVS。
万能作文模板2：销售电器
The protection of power transformer can be divided into two categories: overload and short circuit (grounding may or may not be involved. The main protection of power transformer is usually performed by differential relay gas relay installed in main oil tank and on load tap changer box c) and safety relief device. On the other hand, non directional over-current relay with inverse time or inverse time curve is usually used to provide backup protection.
In most cases, the over-current relay also has an instantaneous device over-current, and the differential relay shall be powered by a separate current transformer. The operation of any of the previously mentioned relays shall be such that the circuit breaker is responsible for disconnecting the power transformer to avoid unnecessary interruptions, these relays shall not operate during magnetization transients or when overload is permissible, gas and differential relays are considered to be selective and therefore their operation generally implies the existence of internal faults in the transformer and the need for maintenance. Therefore, when they detect a fault, they not only send a trip signal to the circuit breaker to interrupt the fault, but can also lock it in the off position by locking the relay, because the undirected over-current relay may operate in the event of an external fault, they only switch the circuit breaker to the open position by the operation of the auxiliary relay.
A typical protection scheme is shown in the figure. One part of the protection device mentioned above is provided with transformers C, VS) and the other part is installed on the panel in the substation control room. For these relays and power transformer protection systems, see CVs.
中文翻译：
电力变压器的保护可分为两类：过载和短路（可能或不涉及接地，电力变压器的主要保护通常由安装在主油箱和有载分接开关箱c中的差动继电器气体继电器执行）和安全泄压装置另一方面，通常采用具有反时限或逆时限曲线的无方向过电流继电器来提供后备保护。在大多数情况下，过流继电器也有一个瞬时装置过电流，差动继电器应由的电流互感器供电。任何先前提到的继电器的运行应使断路器负责断开电力变压器，以避免不必要的中断，这些继电器不应在磁化瞬态期间或过载可容许时运行，气体和差动继电器被认为是选择性的，因此，它们的运行通常意味着变压器内部故障的存在和维护的必要性。
因此，当它们检测到故障时，它们不仅向断路器发送跳闸信号以中断故障，但也可以通过锁定继电器将其锁定在断开位置，因为无方向过电流继电器可能在外部故障时运行，它们只通过辅助继电器的操作将断路器切换到断开位置。图中显示了典型的保护方案，前面提到的保护装置的一部分与变压器c、vs）一起提供，另一部分安装在变电站控制室内的面板上。关于这些继电器和电力变压器保护系统见：cvs cvs。
满分英语范文3：推销电器
Computers we can't do without computers, because computers are very useful. Computers can help us a lot. We can use them to learn more knowledge.
We can use them to do a lot of work quickly. On the other hand, some students are addicted to computer games, which not only affects their studies, but also affects their health. In the future, we can make full use of computers.
中文翻译：
电脑我们不能没有电脑，因为电脑是非常有用的电脑可以帮助我们很多我们可以用它来学习更多的知识，我们可以用它快速地做很多工作，但另一方面，有些学生沉迷于电脑游戏，这不仅影响了他们的学业，也影响了他们的健康。将来我们可以充分利用电脑。
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