Marking chamfer and taper is a routine work in Mechanical drawing.
在机械制图中，通常需要进行大量的倒角和锥度的标注工作。
2
In the end the relationship of steel grades, mould length, drawing speed and sectional dimensions of the billet with mould taper and solidification and contraction coefficient has been discussed.
最后分别讨论了钢种、结晶器长度、拉坯速度、铸坯断面尺寸与结晶器锥度、凝固收缩系数的关系。
3
Two new methods for making taper glass capillary tubes with ordinary drawing machine were developed.