2) crown profile
冠部轮廓
1.
A study of double arc crown profile of PDC bits;
PDC钻头双圆弧冠部轮廓曲线研究
2.
And the key point of teeth distribution design lies in specifying the structural angles and the spatial locations of every tooth, which have close relation to the crown profile of the bit.
PDC钻头布齿是影响PDC钻头性能的关键, 而布齿的关键是确定各切削齿的结构角和空间位置参数, 具体的参数跟钻头的冠部轮廓曲线密不可分。
3) filling materials
冠部封闭
1.
An experimental study about coronal microleakage of tooth filling materials after endodontic treatment;
根管治疗后冠部封闭材料的渗漏研究
4) canopy position
冠层部位
1.
Effects of canopy position and leaf age on photosynthesis and transpiration of Pinus koraiensis;
冠层部位和叶龄对红松光合蒸腾特性的影响
5) Position within tree crown
树冠部位
6) 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。
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