water flow detector 中文意思是什麼
water flow detector
解釋
水流探測器-
Series 774xdcda double check detector assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply
系列747xdcda雙止回閥檢測器總成用於防止污水迴流進入飲用水系統中。
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