- ball valve球阀，弹子阀;
- ball up滚成球;
- ball room舞;
- ball penn.<美>圆珠笔;
- ball park<美俗>职权范围之内的事;球场;
- ball not in play球不在比赛中
- ball mill球磨机;
- ball lock球形闸门;
- ball joint球窝接合，球窝接头;球结;球节;
- ball handling运球，控制球;
- ball gamen.球类运动;棒球;情况;局面;
- ball cockn.浮球阀;球旋塞;
- ball clay球粘土;球土;
- ball boyn.（给打网球的人捡球的）球童;
- ball bearingn.滚珠，球轴承，滚球轴承;
- ball boysn.（给打网球的人捡球的）球童( ball boy的名词复数 );
- get the ball rolling开始;
- start the ball rolling使运行;
- set the ball rollingv.开始活动;
- test tube rackn.试管架;
- 双语例句
1、
METHODS Hot - plate test, rat granuloma caused by cotton ball test, mice's ear - swelling test were used.
方法:采用热板法 、 棉球肉芽法 、 耳肿胀法.
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2、
The tribological properties and the anti - wear of micron coppers inside greases were investigated by four - ball test.
通过四球试验,考察了软金属微米铜粉在润滑脂中的摩擦学行为和抗磨性.
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3、
The tribological properties and the anti - wear of micron copper powder in greases are investigated by - ball test.
通过四球试验,考察了微米铜粉在润滑脂中的摩擦学行为和 抗磨 性.
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