起爆的英文：
go-off
detonation
ignition
fuze action
priming
initiation

参考例句：

This is a trigger for H-bomb.
这个是氢弹的起爆弹。

The bomb failed to detonate.
遥控起爆的炸药.

These can be ignited as by means of a squib or exploded with a cartridge
这些物质可用点火头点燃或由起爆药起爆。

The engine backfired noisily.
那发动机发生逆火引起爆鸣。

The bomb had been set with a four-hour fuse.
炸弹上装了一个四小时起爆的引信。

A cap is inserted into a "well" in the end of can of primer to set it off
雷管插入准备起爆的引爆器盒末端的“孔”中。

Detonation is an important factor in under water blasting.
起爆方式对于水下爆破也是一个重要因素。

Prime an explosive device,ie set the trigger
使爆炸装置准备起爆(将引爆器置于待触发状态).

detonation is an important factor in under water blasting
起爆方式对于水下爆破也是一个重要因素。

The hydrocarbon diperchlorate products have utility as detonatable sensitizers for explosives and alkylating agents
二过氯酸烃基酯产物可用作起爆药的敏化剂及作为烷化剂。

off是什么意思：
adv. 掉，下；离开；隔开；切断；停止；；休息；光，完，尽；全部地
prep. 从...离开；从...向下；在...的外面；偏离...；从...分岔；不再从事...；低于...
adj. 关着的；停止流通的；延期的；取消的；不工作的；处于...境况的；萧条的
v.（用于祈使句）走开，滚开；站开
n. 关掉

Is the water on or off?
自来水龙头开着还是关着？

The gilt is off.
幻想破灭了。

to nip off; to cut off; to break
掐断

detonation是什么意思：
n. 爆炸；起爆；引爆

The bomb had been detonated remotely.
炸弹被远程引爆。

The grenade bounced off their shields, and harmlessly detonated in the air.
手雷被它们的护盾弹开，在空中毫无伤害的爆炸。

The nitroalkanol imparts improved sensitivity and detonation velocities
硝化烷醇提高了感度和爆速。

ignition是什么意思：
n. 点火；着火；点火开关

ignition distributor
点火配电盘

We ignited the bonfire.
我们点燃了篝火。

They rigged the bomb to the ignition.
他们把炸弹装配在点燃线上。