In this paper, an organic combination of surface molding and numerical calculation is applied to optimization design for centrifugal pump impellers.

本文将曲面造型与数值计算有机的结合在一起应用到离心泵叶轮的优化设计中。

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Reciprocating pumps convert rotary motion to linear motion. Pump speed in RPM determines the pumps output volume for any given combination of cylinder bore and piston stroke.

循环泵将曲轴旋转运动转化为柱塞的直线运动。泵速转每分钟决定了任何气缸和活塞组合的排泵量。

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We are looking for 300ml PET bottle with pump. Round bottle, 6cm dia, 11cm height (till shoulder), pump Silver and black combination.

我们正在寻找300毫升PET瓶泵。圆瓶，6厘米直径，11厘米高度(到肩膀)，泵银色和黑色的组合。

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This automation in combination with fake bot accounts that can pump out these messages effectively create a method through which Likes can be bought.

FORBES: Facebook Is Recycling Your Likes To Promote Stories You've Never Seen To All Your Friends

With the right combination of capacity, performance and rapid power cycling storage system designs can pump more iron while keeping cool and saving energy.

FORBES: Pumping Iron and Keeping Cool

Thousands of genes stick to each ball, and the combination is loaded into a "gene gun"--two small stainless-steel chambers and a vacuum pump--that uses compressed helium.

FORBES: Millions Served