R/m;rpm.(revolutions per minute)

revolutions per minute

(略【物】每分钟转数

distance by engine rev.per.m.

按主机每分钟转数计算出的航程

increase the number of rotations per minute.

加快每分钟转动的次数。

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。

a record designed to be played at 45 revolutions per minute

每分钟45转的唱片.

This machine runs at speed of 500 revolutions per minute.

这台机器每分钟500转。

Scim (standard cubic inches per minute)

每分钟标准立方英寸数

Making an engine run faster than 19000 rpm is pointless.

让一台引擎每分钟的转数比19000转还多是没有意义的。

doing a steady 4000 revs(per minute)

达到（每分钟）4000 转的恒定转速.

old-fashioned type of gramophone record to be played at 78 revolutions per minute

每分钟 78转的旧式电唱机唱片.

A phonograph record designed to be played at45revolutions per minute.

每分钟四十五次转速的唱片

They spin at 400-500 revolutions per minute.

它们每分钟旋转四百到五百周。

This machine cannon has a high rotating speed reaching 500 revolutions a minute.

这架机关炮的转速很高, 每分钟可达到５００转。

To make an rpm-drop test, a tachometer is needed.

做每分钟转速下降试验时，需要一个转速表。

The TG70 steam turbine has a operation speed of9600 rotations per minute( RPM).

TG70型蒸汽透平的运转速度为每分钟9600转。

They develop 4.5 horse-power at 9,000 rpm.

当引擎转速为每分钟九千转时，具有4.5马力。