scupper and sanitary overboard discharges的意思|示意

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排水管和卫生舷外排放


scupper and sanitary overboard discharges的网络常见释义

甲板水舷外排水口 ... scumming 除去浮渣去泡沫 scupper and sanitary overboard discharges 甲板水舷外排水口 scupper grating 排水孔格栅 ...