直径与螺距系列 meaning in English
miniature scrcw threads generat plan
Examples
- Trapezoidal screw threads - part 2 : general plan
梯形螺纹第2部分：直径与螺距系列 - General purpose metric screw threads - general plan
普通螺纹直径与螺距系列 - Miniature screw threads . generat plan
小螺纹直径与螺距系列