Total lorentz force does not work, but its component may do so.
总洛仑兹力不作功，但洛仑兹力分力作功。
The work base of the mill is the largest component, which bears most of the rolling force, so the check of the memorial arch in the design is a key part.
工作机座是整个轧机中最大的部件，它承担着大部分的轧制力，因此在本设计中对牌坊的校核是一个关键的部分。
Yet this is precisely what we Americans are trying to do when it comes to the most important component in any economy — the quality of the work force.
劳动大军的素质问题是任何经济中最为重要的组成部分。而正是在这个问题上，我们美国人的所作所为是很成问题的。
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