steel ball

基本解釋

Yang designed a dashboard mount filled with steel ball bearings and lined with silicon.
楊全國設(shè)計了一種以鋼珠軸承填充并以硅襯底的儀表盤座架。
The point: that a period of a pendulum is independent of the mass — the steel ball, plus one professor — hanging from it.
目的是證明：鐘擺周期和質(zhì)量無關(guān) – 那個鐵球的，以及掛在上面的那個物理教授的。
In another lecture on pendulums, he stands back against the wall, holding a steel ball at the end of a pendulum just beneath his chin.
在另外一節(jié)鐘擺課上，他背靠墻站著，抓著鐘擺末端的鐵球，緊貼著他的下巴。

Inside there are just three stainless-steel ball bearings, housed in anodized aluminum bar stock.
FORBES
After throwing a foul, Nelson stepped into the throwing circle for the second time and told himself to "see it" — the whirling move through the circle, the soaring steel ball.
NPR: Shot-Putter Nelson Fails To Make Olympic Grade
Cycling's innovations, including spokes, pneumatic tyres, ball bearings, steel tubing and differential gears, were soon borrowed by the motor industry.
ECONOMIST: How Robert Penn found himself the perfect two-wheeler

鋼球
The type analysis of the cycloid steel ball planetary transmission is made.
對擺線鋼球行星傳動進(jìn)行了較全面的類型分析。
鋼珠

鋼球
Therefore, we ought to check steel ball and take care for crack and slit on it.
因此,必須對鋼球質(zhì)量進(jìn)行嚴(yán)格檢測,尤其是對裂紋、裂縫的檢測。