automatic dampener.
自动着水机

vibrating dampener.
振动减低器

That's a homemade noise dampener.
那是一个自制的噪音缓冲器。

Study on automatic intelligent wheat dampener
全自动智能小麦着水机控制系统研究

The incident put a dampener on his birthday party.
这件事使得他得生日晚会很扫兴。

Admittedly, the recession has been a bit of a dampener.
诚然经济萧条已经逐步在减弱。

Boy, did this woman know how to put a dampener on your day.
天啊，这个女人可真会让人扫兴。

With corrosive fluids, the dampener case must also be selected carefully.
由于腐蚀性的液体，减弱器的外壳也须仔细选择。

Damper Roller on an offset press which applies the moisture directly to the printing plate. Also called Dampener, Damping roller, Dampening roller.
柯式机上，接在版面上加上水份得辘。