Today was the ladder-shaped rock by erosion caused by the difference.
如今呈阶梯状的岩壁是由差别侵蚀造成的。
For instance, awl thread, ladder-shaped thread and triangle thread etc.
例如，锥螺纹、梯形螺纹、三角螺纹等。
This new technology is also applicable to cutting ladder-shaped, square and sawtooth-shaped thread.
此工艺还可应用于切削梯形、方形、锯齿形螺纹方面。
应用推荐