bolted manhole 中文意思是什麼
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Specification for manhole cover assembly, bolted, semi - flush, oiltight and watertight
半埋入式防油防水螺栓連接人孔蓋組件規范 -
Standard specification for manhole cover assembly, bolted, raised, oiltight and watertight
防油防水隆起的螺栓連接檢查孔蓋組件標準規范 -
Specification for manhole cover assembly, bolted, hinged, semi - flush, oiltight and watertight
半埋入式防油防水螺栓連接的人孔蓋組件規范 -
Standard specification for manhole cover assembly bolted, semi - flush, oiltight and watertight
防油防水半嵌入螺栓連接檢查孔蓋組件標準規范 -
Standard specification for manhole cover assembly, bolted, semi - flush, oiltight and watertight, hinged
防油防水半嵌入螺栓鉸接檢查孔蓋組件 -
Step irons for staggered manhole steps - part 3 : bolted - on step irons
錯列人孔階梯腳扣.第3部分:螺栓連接的階梯腳扣 -
Step irons with upstand for staggered manhole steps - part 3 : bolted - on step irons
錯列人孔直立式階梯腳扣.第3部分:螺栓連接的階梯腳扣
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