空载的英文：
carrying idler
idler
idling
no-live load
no-load

参考例句：

Overall size(mm)WD H (no load)
外廓尺寸(mm)长X宽X高(空载)

kerb weight
(无人无货的汽车)空载重量

The response time of the analyser is made up of dead-time and equilibration
分析器的响应时间是由空载时间和平衡时间组成。

It can improve the power factor of the motor when it is under low load or no load running.
能提高电动机在轻载或空载时的功率因素。

carrying是什么意思：
adj. 运送的
v. carry的现在分词；携带

carry an article
刊登一篇文章

To carry by barge.
用驳船运载

a device on an aircraft for carrying bombs.
飞机上用来装载炸弹的装置。

idler是什么意思：
n.
1.懒汉；无所事事的人

"A young idler, an old beggar"
少壮不努力,老大徒伤悲

Blend Rational Bézier Fit in Reversing Production of Idler Pulley
导轮逆向生产中的混合有理bézier曲面拟合

I lounged up the side aisle like any other idler who has dropped into a church
我就象偶尔进入教堂里边的其它游手好闲者一样，信步顺着两旁的通道往前走。

idling是什么意思：
[idle] 的现在分词形式；虚度，空转

The tongue of idle person is never idle
人懒话多

The tongue of idle persons is never idle.
懒汉的舌头并不闲。

The protracted idleness eat at him.
这样没完没了地一天天闲混，使他苦恼。