construction elevator safety procedures of Standards and Technology(Chinese Edition) - Couverture souple

“ XIAN DAI QI YE AN QUAN CAO ZUO GUI CHENG BIAO ZHUN YU JI SHU CONG SHU ” WEI HUI

 
9787504574022: construction elevator safety procedures of Standards and Technology(Chinese Edition)

Synopsis

Language:Chinese.No Binding.publisher:China Labor and Social Security Publishing House P.description:Pages Number: 147 Publisher: China Labor and Social Security Publishing House Pub . Date :2009-01. construction elevator construction lift also known. is a way of using rack and pinion gear or wire rope to enhance the ways in which hoists for vertica

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