在室内土槽中对弹性轮进行了牵引性能试验研究及弹性轮与7.50 - 16橡胶轮胎牵引性能对比试验研究。

Tractive performances tests of elastic wheels were conducted in the in-lab soil bin in comparison With those of the driven tire of 7.50-16.

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自2007年12月本轮衰退开始以来，美国的弹性劳动力市场已经减少了440万个职位。在过去三个月里每个月都有超过60万个工作机会蒸发。

Its flexible Labour market has shed 4.4m jobs since the downturn began in December 2007, including more than 600, 000 in each of the past three months.

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平板马车一种轻便的四轮马车，车身为一有弹性的平板，上设座椅，无顶盖。

A four - wheeled open carriage with the seat or seats attached to a flexible board running between the front and rear axles.

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