The breakthrough here is that we do not need to use an electrical power source anymore to provide a little energy into the system.
这项技术的突破点是在这个系统中，不需要再额外施加任何电能。
The electrical energy measurement is an important part in the modern electric power marketing system.
电能计量是现代电力营销系统中的一个重要环节。
The energy transmission system may include an electrical power source;
该能量输送系统可包括电源；
The energy transmission system may include an electrical power source;
该能量输送系统可包括电源；
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