查询词典 hourglass

Fath was famous for his hourglass shapes, plunging necklines, tiny waists and full skirts.

法特赫是以其沙漏款，翻领，瘦腰和长裙闻名。

Based on the gear geometry of the double enveloping hourglass worm gearing, the tooth surface of the wheel, which is composed of the so-called the original and new contact surfaces, is derived.

基于齿轮几何形状的双包络环面蜗杆的齿面的车轮，后者是由所谓的原始的和新的接触面，导出。

The double-enveloping hourglass worm gearing is one kind of mechanical transmission drivers, which is developed by China and Japan firstly and is used widely in national defense and civil producing industries.

平面二次包络环面蜗杆传动是由我国和日本率先研究成功的一种机械传动方式，在国防和民用工业领域内得到大量的应用。

The results provide theoretical guide for reasonable selecting of geometric design parameters of double-roller enveloping hourglass worm gearing.

所得结果有助于合理选择双滚子包络环面蜗杆传动的几何设计参数。

These 2,500-year-old petroglyphs, portraying figures with tulip-shaped heads and hourglass bodies, mark an ancient human presence in the Sahara desert's Air Mountains.

在撒哈拉沙漠的埃尔山脉，有着超过2500年历史的岩石雕刻，岩石上刻画有郁金香形状的头和沙漏形状身体的人形，描绘的是古老人类的出场。

He found that centrefolds vary in weight but not in their hourglass shapes.

他发现尽管模特们的体重千差万别，但她们共同点是都有一个沙漏般的完美曲线。

The sands of time are running out for the central star of this hourglass shaped planetary nebula .

对产生这个行星状星云的中心恒星来说，它的来日的确是不多了。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥