knocking

名词爆震音，卡答卡答的故障声音

动词敲，击，打( knock的现在分词 ); （心）怦怦跳; 把…撞击成（某种状态）; 批评

1. 爆震：但是在工程师们想尽办法来提高引擎X能的同时,却因为爆震(Knocking)的发生而受到种种的限制,而一具最高X能的引擎就是在燃烧与爆震的交互作用和互相牵制下得出的妥协.

2. 震爆：辛烷值1下一篇文章辛烷值是汽车所使用的汽油中,一个抵抗震爆(knocking)的指标. 由于汽油内的庚烷在高温和高压下较容易引发自燃,造成震爆现象,我们把庚烷的辛烷值定为零. 与辛烷有同一分子方程式的异辛烷,其震爆现象最少,

3. 爆震音：knocker 敲门者 | knocking 爆震音 | knockout 击昏

4. 膏震(泥)：Kleinturbidimeter 凯林浊度计 | Knocking 膏震泥 | Knoophardnesstestknot 节波

1. The video shows the upper half of the boy's body was hit by the car, knocking him down.

2. 911chaxun查询·英语单词

2. Knocking on doors for a census was probably good training for chapping doors as a newspaper reporter later in my career.

3. It transpired that I'd come in at the end of the lunch period, and the chef was knocking off for the day.

4. In this context the phrase'knocking on doors'means keeping constant pressure on the opposition.

5. Police set up a cordon on both ends of the road and evacuated residents by knocking on doors and through the use of loudspeakers.

6. The van crashed against a minibus before knocking down fences and crashing into a lane designated for public buses.

7. It is said the train was rushed out of the railway, knocking down the fence before falling on the crawler lane.

8. The Chinese rating agency Dagong Global Ratings Co Ltd said it would consider knocking the US credit rating down another notch.

9. Or else, how can a youth drive away after knocking down two human beings?

10. knocking

10. The bus slid down a roadside embankment after knocking down fences, a traffic light and a road sign.

noun