成功熨烫底边的窍门是用很小的压力，这样就不会倒伏而产生一条刃形边缘。
The secret of successfully pressed hems is to use very little pressure so that the edge is not flattened to produce a knife edge.
本文在分析对称形铲斗回转时切削刃长度变化的基础上，提出一种非对称铲斗斗形。
Based on an analysis on the variation of cutting edge length of symmetrically shaped bucket in slewing conditions, a non-symmetrical bucket shape is presented.
从而在刃形设计的速度和精确性方面，均取得了较满意的结果。
This calculated result is satisfactory in speed and accuracy for the cutting edge design.
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