Chinese translation for "人孔环"

manhole rings

Similar Words：

"人孔盖" Chinese translation, "人孔盖板" Chinese translation, "人孔盖链" Chinese translation, "人孔盖座" Chinese translation, "人孔鼓风机" Chinese translation, "人孔加强环板" Chinese translation, "人孔加强圈" Chinese translation, "人孔井" Chinese translation, "人孔颈口" Chinese translation, "人孔口" Chinese translation