1. 拍底：394 燃料马力 potential horsepower | 395 拍底 pounding | 396 动力泵 power pump

2. 整形：portion 一部分 | pounding 整形 | pre-shrunk 防缩

3. 撞击：pounding stress 波击应力 | pounding 撞击 | pounds per square inch 磅英寸2

noun

1. the act of pounding (delivering repeated heavy blows)

e.g. the sudden hammer of fists caught him off guard
the pounding of feet on the hallway

Synonym: hammerpoundhammering

2. an instance of rapid strong pulsation (of the heart)

e.g. he felt a throbbing in his head

Synonym: throbthrobbing

3. repeated heavy blows

Synonym: buffeting