minimum wall thickness 中文意思是什麼
minimum wall thickness
解釋
最小壁厚-
Ventilation plant ; unplasticized polyvinylchloride pipes ; non - reinforced ducts ; minimum wall thickness
通風設備.無增塑劑的聚氯乙烯非加固管道.第5部分:最 -
Ventilation plant ; unplasticized polyvinylchloride uptakes ; pipe fittings, bends ; minimum wall thickness
通風設備.無增塑的聚氯乙烯垂直管道.彎管配件.最小壁
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