threadless 中文意思是什麼
threadless
解釋
無螺紋的-
On threadless binding and hot melt adhesive
無線裝訂和熱熔膠 -
Standard specification for threadless copper pipe, standard sizes
標準尺寸的無螺紋銅管的標準規范 -
Threadless interpolator and control instrument
無線轉發控制儀
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