concealed piping 中文意思是什麼
concealed piping
解釋
暗裝管道-
Probe into concealed piping technology of town gas pipeline for residential buildings
城市住宅燃氣管道暗敷技術的探討 -
Carry out regular leakage tests on concealed piping and check for overflowing tanks, waste, worn tap washers and other defects in the water supply system
定期檢查隱蔽水管，以防漏損，檢查內部供水系統，修理有毛病的水箱、水頭及其他的供水設施。
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