double nipples 中文意思是什麼
double nipples
解釋
雙頭螺紋接管-
Steel connections with gas thread. double nipples
鋼制氣體螺距的連接管.雙接頭 -
Steel fittings for railway vehicles - double nipples, reduced double nipples
有軌車輛用鋼管配件.雙過渡接頭.縮徑雙端短管接頭 -
Steel fittings for railway vehicles - pipe nipples, double pipe nipples, swadged nipples
有軌車輛用鋼管配件.短管接頭.雙端短管接頭.過渡接頭
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