ball carrier

基本解释

Obstruction: Players may not obstruct opposing players from making a touch or supporting the ball carrier.
阻挡：进攻放球员不得阻挡对方队员触碰持球者，或给予持球者帮助。
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It can solve the problems such as inhomogeneous heating of different solder bumps in ball grid array, simultaneous heating of chip and carrier with solder ball, etc.
该方法能够很好地解决由于无铅钎料的应用引起的日益严重的诸多问题，如球栅阵列中各钎料球受热不均匀和芯片基板与钎料球同时受热等。
Consequently, shell appears more superior to traditional plastics ball when using as biomass carrier in aerated bio-filter for ammonia removal at low pH value and high ammonia loading in influent.
贝壳填料的曝气生物滤池相比于传统的塑料填料曝气生物滤池具有明显的硝化处理优势。

When the ball carrier is on the ground, someone on the defense must at least touch him so he's ruled down.
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