1) semi-round nose
半圆形冠部
2) semiround nose bit
半圆形冠部钻头
3) corona shape
冠部形状
1.
According to the design theory of DBIT,the development of a method for blade corona shape design and tooth arranging of reamer is described in the paper.
借鉴金刚石钻头的设计理论,针对随钻扩眼器切削刀翼的特殊性,提出了一套专门适用于液压控制式双向随钻扩眼器刀翼冠部形状设计与布齿的理论及方法。
4) conical crown
圆锥形树冠
1.
Theoretical research on a model for predicting the shadow boundary of an individual conical crown on a slope;
坡面单木圆锥形树冠投影边界的模型理论
5) jie-shape cap(crest)
(半)介字形冠
6) half crown seizing
半冠形合扎
补充资料：冠部
1.指吏部。古代中央官制设六部，以吏部为首。故称。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条