Noun:

1. a movable iron plate that regulates the draft in a stove or chimney or furnace

2. a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations

3. a depressing restraint;

   "rain put a damper on our picnic plans"
   

mufflern.围巾；头巾；厚手套；消声器

discouragementn.挫折

inhibitionn.拘谨；禁止；阻止；抑制

hindrancen.起妨碍作用的事物或人

impedimentn.障碍；阻碍；口吃

obstructionn.障碍；妨碍；闭塞；违例阻挡

regulatorn.调整者；调整器；监管机构

stoppern.瓶塞；阻塞物；阻拦牌（游戏）；使某事停止之人或物vt.用塞子塞住

controln.掌控；控制；管制；克制；操作装置v.控制；支配；掌管；抑制；克制

controllern.控制者；管理者；审计官；控制器

muten.哑子；弱音器；默音字母adj.哑的；沉默的；无声的vt.减音；减弱vi.(鸟)排泄

silencern.(内燃机)消音器；(手枪)消音装置；使沉默的人=muffler(美).

softenern.软化剂；柔软剂

1. Damper actuators and air quality control document should be sent today.
   今天应当发送风阀执行器及空气质量控制文件。
2. Now the damper became a must, a life saver!
   现在制音器变成必需设备,救助器!
3. We have got control problem, yaw damper inoperative.
   我们操作系统故障，偏航阻尼器不工作了。
4. Rain put a damper on our picnic plans.
   大雨阻止了我们的野餐计划
5. Mary's absence cast a damper over the party.
   玛丽缺席使晚会为之扫兴。