variable frequency technology 变频技术 ; 变频调速
Variable Frequency Control Technology 变频控制技术
variable velocity variable frequency technology 变频调速技术
digital control variable frequency technology 数控变频技术
Variable frequency hadraulic technology 变频液压
high voltage variable frequency technology 高压变频技术
variable voltage-variable frequency technology 变频调速技术
The using of the automatic optimization and frequency variable technology can realize efficiency in circulated water of the power plant.
利用自动优化控制和变频调速技术实现火电厂循环水泵安全节能高效控制。
In the application of central air-conditioning, the technology of variable-frequency primary pump has been widely studied.
在中央空调的应用过程中，冷冻水一次泵变频技术得到了广泛的研究。
From the viewpoint of energy saving, the application of variable frequency technology in the secondary pump system was expounded and the energy consumption of variable frequency pump was analyzed.
从节能的角度，阐述了变频技术在二次泵变水量系统中的应用，对变频水泵的能耗进行了分析。
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