The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
Solid-state tube laser (SSTL) is one of available laser with high power output, for its high slop efficiency and electro-optical efficiency compared to the solid-state rod laser.
管状固体激光器可获得较高的斜效率及电光转换效率，因此是人们寻求可获得高输出功率的有效器件之一。
The separation of power machine and compressor gives a available way of improving calorific efficiency and performance per litre.
动力机与压缩机的分离为动力机的热效率和升功率的提高提供了有效途径。
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