This essay discusses the calculation of the traction force for the loaded car puller in a car dumper system, as well as the optimization of the system's power and efficiency.

论述了翻车机系统中重车凋车机牵引力的计算及翻车机系统功率与效率的优化配置。

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An older woman with marketing to do, for instance, can arrive in a rickshaw, have the rickshaw puller wait until she comes back from various stalls to load her purchases, and then be taken home.

例如，一个要买东西的老妇人可以坐人力车来，让人力车车夫等她从各个摊位回来装上她买的东西，然后拉她回家。

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Russia is always a crowd-puller too, but what role it ends up playing depends what mood it is in.

俄罗斯也经常成为大众关注的对象，但它最后会起什么作用取决于它的心情如何。

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"Dan's very much a trigger puller, but the stuff he can do in a moment's notice isn't always going to work, " says board member Mark Jennings, a founder of the venture firm Generation Partners.

FORBES: Changing the Game Plan

He was also a fine puller and an efficient cutter, but it was the manner in which he got his runs that stood out, specifically because it didn't stand out.

WSJ: Farewell to an Underrated Star

Abed, a rickshaw puller, sold his rickshaw and his home to pay for his son's medical treatment in Dhaka.

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