1) ball-type valve
钢珠活门
2) steel ball
钢珠
1.
A dynamic model of steel ball during the lapping process is presented to meet the requirement fulfill the superprecision machining of steel balls for satellite bearing.
为了适应卫星轴承钢珠精化的需要,建立了研磨过程中钢珠的动力学解析模型,分析了球与四研头之间的运动、四研头转向与球面加工、摩擦力与加工精度等关系。
4) steel ball
钢球，钢珠
5) ball
[英][bɔ:l] [美][bɔl]
(1)珠(2)滚珠，钢珠
6) Zhenzhumen Formation
珍珠门组
1.
The parallel unconformity between Huashan Formation and Zhenzhumen Formation of the Laoling Group, Tonghua area, and its geologic significance;
通化地区老岭群花山组与珍珠门组平行不整合的发现及意义
2.
The disintergration of the Zhenzhumen Formation and the reconstruction of the paleo-middle Proterozoic Group;
吉南珍珠门组的解体与古-中元古界层序的重建
补充资料：钢珠
（～儿）滚珠。
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