低速的英文：
low speed
low velocity
slow speed

参考例句：

He exchanged high gear into low one when driving on a slope.
爬坡时，他将高速档换成低速档。

A low-speed input device that converts graphic and pictorial data into binary, numeric inputs for a digital computer.
一种低速输入设备，它将图形和图象数据转换成用于数字计算机的二进制数值输入。

Mainshaft low and reverse sliding gear
主轴低速及倒车滑动齿轮

The asthenosphere corresponds approximately to the low-velocity zone
软流圈，大体上相当于低速带。

You must use a low gear to drive up the hill.
开车上山你要用低速档。

Front-wheel shimmy (low speed ) . Low-speed shimmy is the rapid oscillation of the wheel on the Ball joints.
前轮摆振(低速时):低速摆振是球头节上车轮急速颤动所至。

She selected a low gear and started down the track carefully.
她选了低速挡小心翼翼地沿小径下行。

This air improves the atomization of fuel coming from the low-speed port
这些空气改善了从低速出口喷出的燃料的雾化。

When you want to go backward, the gears work like the powerful low gears, but in the opposite direction.
当要倒车时，就用低速齿轮，但齿轮是反方向旋转。

The low case presents the alternative outcome if policies dissipate the results of these developments
低速方案则表明，如果政策勾销这些发展带来的结果，那会产生另一种结局。

low是什么意思：
adj. 低的；在底部的；不足的；低于通常标准的；沮丧的；差的；状态不佳的
adv. 向下；在靠近…底部的位置；低于通常的水平；低声地
n. 低水平；低谷；低气压区
v. （牛）哞哞叫

low-velocity drop
低速度空投

To speak with a low, hoarse voice.
低哑地说用低而嘶哑的声音说话

To rate too low;underestimate.
低估对…估价太低；低估

speed是什么意思：
n. 速度，速率；快速，迅速
v. 迅速前进，快行；促进；加速，使加速

The speed of a train differs greatly from the speed of an airplane
火车的速度与飞机的速度大不相同。

The car is gaining speed.
那辆轿车正在加速。

The worker is timing the speed of the machine.
这名工人正在调整机器的速度。

velocity是什么意思：
n. 迅速；快速；速度；速率

Normally the shear velocity is about half of the compressional velocity
一般地说横波速度大约是纵波速度的一半。

low-velocity drop
低速度空投

high velocity drop
高速度空投