steel ball
常见例句
- Yang designed a dashboard mount filled with steel ball bearings and lined with silicon.
杨全国设计了一种以钢珠轴承填 充并以硅衬底的仪表盘座架。 - The point: that a period of a pendulum is independent of the mass — the steel ball, plus one professor — hanging from it.
目的是证明:钟摆周期和质量无关 – 那个铁球的,以及挂在上面的那个物理教授的。 - 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.
在另外一节钟摆课上,他背靠墙站着,抓着钟摆末端的铁球,紧贴着他的下巴。 - 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 返回 steel ball