double-start thread 中文意思是什麼
double-start thread
解釋
雙頭螺紋-
Single - and double - start acme thread with clearance for rail vehicles - part 1 : dimensions
有軌車輛用帶間隙的單頭和雙頭愛克米螺紋.第1部分:尺 -
Single - and double - start acme thread with clearance for rail vehicles - part 2 : thread limits and limit deviations
鐵路車輛用帶間隙單頭和雙頭愛克米螺紋.第2部分:螺紋 -
Single - and double - start acme thread with clearance for rail vehicles - part 3 : thread gauges ; thread dimensions and permissible wear of thread gauge
鐵路車輛用帶間隙的單頭和雙頭愛克米螺紋.第3部分:螺
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