Such a new type of hourglass worm pair is particularly-favorable for power transmission.
蜗杆与蜗轮均为硬齿面，适于动力传动的新型环面蜗轮副。
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Almost any dress type looks good on an hourglass figure.
几乎任何款式的连衣裙都适合沙漏型身材。
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