areas of permanent pressure
... areas of mobile bottom 海底易变区 areas of permanent pressure 恒压区 areas under reclamation 填筑区 ...
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恒压区测试 Standard CV
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以生活区的恒压供水系统为例，介绍了应用PLC实现变频恒压供水系统的需求分析和实现过程。
Take constant pressure supply water system of life area for example, this paper introduces the needs and realization of variable-frequence constant-pressure supply water system using PLC.
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