revolutions per minute

This machine runs at speed of 500 revolutions per minute .

这台机器每分钟500转。

Engine speed is measured in revolutions per minute .

发动机速度是以每分钟的转数来测量的。

Revolutions per minute ( esp as a measure of engine speed )

每分钟的转数（尤指发动机的）

A speed of 100 revolutions per minute

每分钟100转的转速

The drum is rotated at 20 revolutions per minute for 10 minutes .

圆筒以每分钟20转的速度转10分钟。

They spin at 400-500 revolutions per minute .

它们每分钟旋转四百到五百周。

A phonograph record designed to be played at45 revolutions per minute .

我听说，格伦决心要打破一分钟吃煮鸡蛋个数的世界纪录。

Shaker revolutions per minute , 100 rpm , were favourable to hairy root growth and flavonoids production .

摇床转速为100rpm的条件有利于毛状根生长及黄酮类化合物的生物合成。

A switch is flipped and the frames begin to whirl at300 revolutions per minute ;

一个转换器翻转，装置开始旋转每分钟300圈。

The furnaces were urged into greater activity ; our propeller did forty-three revolutions per minute , and steam shot from the valves .

火力尽量加大着，机轮每分钟转四十三转，蒸汽从活塞里跑出。

The latter has a diameter of 6 meters , a pitch of 7.5 meters , and can do up to 120 revolutions per minute .

推进器的直径是六米，涡轮的直径是七米半，每秒钟可转一百二十转。

Obviously , the spindle speed of the portable machine at10,000 revolutions per minute was greater than the maximum permissible speed of the disintegrated abrasive cutting disc .

明显地，便携机器可处理速度每分钟10000转次，远远超过碎裂砂轮最高容许速度。

Based on the experimental results , the authors have established the dependence of absolute and relative wear of impregnated diamond bit on bit weight , revolutions per minute , watersupply and matrix hardness .

本文作者根据此试验结果确定出了金刚石孕镶钻头的绝对磨损、相对磨损与钻头压力、钻头转速、冲洗液量、胎体硬度的关系式。

Liquid carbon dioxide as the hydrate former at the stirring speed of 400 revolutions per minute was the best desalination condition which was help to accelerate the hydrate formation and improve the desalination rate .

搅拌速度为400r/min时，以液态二氧化碳进行海水淡化为最佳条件，此时可以加快水合物的生成，提高淡化速率。