滚珠的英文：
ball bearing

参考例句：

Ball helical gearing
滚珠螺旋传动

Recirculating ball type steering wheel
循环滚珠式转向盘

Ball recirculating nut steering gear
用封闭循环滚珠螺母[用螺杆和滚珠螺母]的转向机构

With the car upside-down, the ball forces the plunger to seat against the guide plate
当汽车倾倒时，滚珠迫使柱塞落在支承板上。

To decrease friction between the worm and the nut, balls recirculate in their thread.
为了减少蜗杆和螺母之间的摩擦，滚珠在其螺纹中不断滚动。

ball是什么意思：
n. 球；舞会
v. 成团块；捏成球形

You have no balls!
你们一点胆量都没！

The kitten tangled the ball of yarn.
猫把线团儿弄乱了。

A ball hissed by.
子弹嘶地一声飞过。

The dog had itself a ball.
狗玩得很愉快。

Do you have the balls to challenge authority?
你有挑战权威的胆量么？

bearing是什么意思：
n. ① [sing.] 举止，风度；② [U] 关系，关联；③ [C] 方位；方向；④ [C] 机器承座；轴承。

"Bearing up , bearing up . "
马马虎虎。

They censused the bear in the forest.
他们统计调查森林中熊的数量。

To bear hard upon;press.
使痛苦不堪对某人施加困难；逼迫

The evidence has no immediate bearing on the case.
该证据与本案无直接关系。

They bear you no ill will.
他们对你并无恶意。