节：速度单位，相当于每小时一海里(1,852米)。

Knot: a unit of speed of one nautical mile (1,852 m) an hour.

youdao

速度升高到1.3马赫（速度单位，1马赫=音速=340.29m/s——译者注）以后，不会再对冲击波强度造成太大的影响。

Increasing speeds above Mach 1.3 results in only small changes in shock wave strength.

youdao

我以历来最快的速度赶到单位上班。

I got to work in record time.

《牛津词典》

Sometimes they give you the speed in miles per hour, kilometers per year, pounds per square foot.

有时候速度的单位是英里/小时,千米/年,英磅/平方米

耶鲁公开课 - 基础物理课程节选

I agree, but I want the speed in meters per second.

我同意,但我希望速度以米每秒为单位

耶鲁公开课 - 基础物理课程节选

We divide that by the mass, so 0.12 kilograms, that's the mass of a regulation baseball for the major leagues, and the velocity of the baseball is 42 meters per second. So, we can cross out our units doing our unit analysis.

我们用质量来除它，质量为0，12千克，这是大多数联赛规定的棒球质量,棒球的速度为42米每秒,所以，我们可以消去单位,来做单位分析。

麻省理工公开课 - 化学原理课程节选