1) collar bore
套环孔
2) precombustion chamber collar bore
预燃室套环内孔
3) bore trepanning
套孔
1.
This paper studies the principle and characteristics of bore trepanning processing technology of Nd-Fe-B permanent magnetic material by technological experiment,which develops proper and optimum processing technological parameters and establishes an empirical formula on the feeding force by multi-element regression analysis based on data of orthogonal test.
用金刚石刀具对钕 -铁 -硼永磁材料进行套孔加工是节约利用昂贵的稀土永磁材料的一种十分有效的方法 。
2.
The work principle of a bore trepanning machine for rare-earth permanent magnetic material prestented.
阐述了用于稀土永磁材料套孔加工的自动稀土旋孔机的工作原理，介绍了机械系统结构设计及特点。
5) collar
[英]['kɔlə(r)] [美]['kɑlɚ]
套圈，套环，环
6) over-core drilling
钻孔套孔法
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
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