manhole steps 中文意思是什麼

manhole steps 解釋
人孔梯
  • manhole : 人孔，（陰溝的）檢修孔；【鐵路】避孔。
  • steps : 步伐
  1. Step irons for staggered manhole steps - part 2 : step irons to be set into prefabricated concrete units

    人孔錯列階梯腳扣.第2部分:澆入混凝土預製件的階梯腳
  2. Step irons with upstand for staggered manhole steps - part 2 : step irons to be set into prefabricated concrete units

    人孔直立錯列階梯腳扣.第2部分:澆入混凝土預製件的階
  3. Step irons for staggered manhole steps - part 1 : step irons to be fitted in masonry or set into concrete

    人孔錯列階梯腳扣.第1部分:砌墻或澆灌混凝土階梯腳扣
  4. Step irons with upstand for staggered manhole steps - part 1 : step irons to be fitted in masonry or set into concrete

    人孔直立錯列階梯腳扣.第1部分:砌墻或澆灌混凝土階梯
  5. 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
  6. 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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