In many cases the discounted cost of the item combined with the shipping is reasonable compared to the full retail price plus the time and energy a shopper expends to go and get the item.
在很多情形下，商品的折后价加上运输费用的总和与零售价和消费者前往商场购买该商品所需的精力和时间的总和相当。
This paper analyses the difference between the driving wheel and driven wheel when calculating the power which the rolling resistance expends in wheel machine.
分析了轮式机械滚动阻力消耗功率计算中驱动轮和从动轮之间的差异，给出了一般计算公式，为轮式机械的设计提供了参考。
During the fatigue process, the formation of the main crack expends most of the whole fatigue life, and once the main crack forms, the crack propagates rapidly and fractures immediately.
疲劳过程中主裂纹的形成消耗了大部分的疲劳寿命，一旦主裂纹形成就快速扩展瞬间断裂。
The invention provides a novel organic gas processing technique, which expends the application area of activated carbon fiber adsorbent.
本发明提出一套全新的有机废气处理工艺，拓展活性碳纤维吸附剂的应用领域。
The invention provides a novel organic gas processing technique, which expends the application area of activated carbon fiber adsorbent.
本发明提出一套全新的有机废气处理工艺，拓展活性碳纤维吸附剂的应用领域。
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