词组短语
manhole cover[口]井盖;升降口盖;圆盘状平的东西
权威例句
ManholeManholeManhole coverPIPE TO MANHOLE SEALManhole assembly with water barrierMANHOLE CLOSURE ASSEMBLY WITH VALVE RELIEF MEANSTreatment suits manhole rehabilitation.Interpretation of telephone system manhole drawingsInterpretation of telephone system manhole drawingsDesign & analysis of the pressure vessel manhole nozzle metallic flangeguard as per ASME SEC VIII Div. 1, Edition 2010