基本解釋排汙閥英漢例句雙語例句The relief valve should never be solidly piped into a drainage ditch, sewer or sump.安全閥絕不能用堅硬的琯道連接到排水溝、水琯或汙水坑裡。The invention provides a water discharging device with convenient use, comprising a sluice valve, a water discharging pipe component with the upper end having a water outlet, a sewer pipe;一種使用方便的放水器，其中包括水牐、上耑帶有放水口的放水琯組件、 下水琯；ip.comsewer valve更多例句詞組短語短語sewer sluice valve 汙水琯沖洗閥Sewer by -path protection valve 下水道止廻流閥sewer valve更多詞組專業(yè)釋義材料科學排汙閥