alternate light and heavy line method

工程相关外语-轻松数控网 ... 螺纹正规符号书法(美式) alternate light and heavy line method 变换法 alternate method ...

美英加陆军规格_馆档网 ... "螺纹正规符号画法(美式)"," alternate light and heavy line method" "变换法"," alternate method" ...

机械图纸常用词汇中英文 -... ... 螺标正标符 标法 号 (美式) alternate light and heavy line method 标标法 alternate method ...