1.
Greatest effect is achieved when used in conjunction with primary surge protection on main power service. One required for each power source.
与主要电源供应系统的主过载保护装置一起使用可达到最好的效果。每个电源需要一个避雷器。
2.
Abstract The development of inverter welding power source is the inexorable trend of welding power source orientation.
逆变焊接电源是焊接电源的主要发展方向之一。
3.
A major area for energy savings is the prosaic electric motor.
普通电机是节约能源的一个主要领域。
4.
Electric utilities and industrial plants are the principal producers.
发电厂和工厂是硫氧化物的主要来源。
5.
Main source: coal-fired power plants and automobile exhaust.
主要来源：汽车尾气和燃煤发电厂。
6.
The unit is not disconnected from the AC power source (mains) as long as it is connected to the wall outlet, even if the unit itself has been turned off.
即使本机的电源已经关闭，但只要它还连接在墙上的电源插座上，就未脱离交流电源（主电源）。
7.
Power Side Surge Protection of Electrical and Electronic Equipment --Basic Parameters of SPD
电气、电子设备电源侧的电涌保护——电涌保护器主要参数
8.
Your major distraction are e-mail, telephone, visitors and yourself.
分心的主要来源是电邮，电话，访客及你自身。
9.
This paper describes the principle of sin voltage source and current source that can be programme controlled.
文章主要介绍程控正弦功率电压源和电流源校表仪的原理。
10.
The alternating current supply to UPS for the main telephony equipment will be connected to an essential supply bus so that power can be provided by generators, when necessary.
主电话设备所用的UPS交流电源将接到基本电源总线，以便需要时由发电机供电。
11.
Computer keyboards are also a major source of radiation, perhaps you did not know.
也许你还不知道, 电脑键盘也是主要的辐射源。
12.
SINUS presence is witnessed in the industrial electronics, railway and energy industries.
圣诺主要应用于工业电子，车轨及能源领域。
13.
These passive circuit elements, as they are often called, are of three main types.
通常所说的无源电路元件有三种主要类型。
14.
The most pollution sources in Hubei province alu minium electrolysis enterprises are the electrobaths in their electrolysis works hops.
湖北铝电解企业的主要污染源是电解车间的电解槽。
15.
Abstract: The most pollution sources in Hubei province alu minium electrolysis enterprises are the electrobaths in their electrolysis works hops.
文摘:湖北铝电解企业的主要污染源是电解车间的电解槽。
16.
The composition of the inverter, the working principle of full-bridge main circuit, controlling circuit, drive circuit and protect circuit are described.
就其电源的主体结构，全桥主电路、控制电路、驱动电路以及保护电路的工作原理作了简要的论述。
17.
Transmitting noise is main interfereing source of switch power supply which is coupled through lines of power supply, singal, interlinkage and grouding.
传导型噪声是开关电源的主要骚扰源，它可以通过电源线、信号线、互连线、接地导体等进行耦舍。
18.
"Owners of radio or television stations, magazines, or newspapers think of advertising as the source of most of their revenues."
电台、电视台、杂志和报纸的所有者将广告视作他们收入的主要来源。