self-operated differential pressure controller
...自力式压差平衡阀,实际流量特性,流量系数,水力平衡, [gap=816]Keywords：constant differential pressure control,self-operated differential pressure controller,real flow characteristic,flow rate coefficient,hydraulic balance, ..
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self-operated differential pressure controller
自助式压差控制器
以上为机器翻译结果，长、整句建议使用 人工翻译 。