impulse turbine[动力] 冲动式汽轮机;[动力] 冲动式透平;冲唤涡轮;冲唤汽轮机
impulse shopping冲动性购买;冲动性采办;激动性购置
impulse relay[通信] 脉冲继电器;冲击继电器;脉冲继电器英语;脉冲继电器
flexible impulse柔性冲击;柔性打击
impulse test[试验] 冲击试验;[电子] 脉冲试验;冲辉验;冲击波试验
apical impulse心尖搏动;心尖冲动;心
impulse blade冲击轮叶;[机] 冲动式叶片;冲击式叶片;冲击之刃
impulse motor脉冲马达;脉冲电动机;脉冲电念头
total impulse[航] 总冲量;全像偏转
N-VAR（有变体名词） An impulse is a sudden desire to do something. 冲动
Unable to resist the impulse, he glanced at the sea again.
他抑制不住冲动，又看了一眼大海。
N-COUNT（可数名词） An impulse is a short electrical signal that is sent along a wire or nerve or through the air, usually as one of a series. 脉冲
It works by sending a series of electrical impulses which are picked up by hi-tech sensors.
它通过传输由高技术传感器收集的电脉冲而起作用。
ADJ（形容词） An impulse buy or impulse purchase is something that you decide to buy when you see it, although you had not planned to buy it. 一时心血来潮的 [ADJ n]
The curtains were an impulse buy.
这窗帘是一时心血来潮买下的。
PHRASE（习语） If you do something on impulse, you suddenly decide to do it, without planning it. 凭一时冲动
Sean's a fast thinker, and he acts on impulse.
肖恩是个思维敏捷、凭一时冲动行事的人。