no-negative pressure water supply
...无负压供水;优化调度;二位三通电磁阀 [gap=702]Key words】Changing frequency to control speed; The secondary water supply; No-negative pressure water supply; Optimization dispatchers; two-position three-way solenoid valves ..
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no-negative pressure water supply
无负压供水
以上为机器翻译结果，长、整句建议使用 人工翻译 。