锤打，锤打的声音；锤打( hammer的现在分词 )；反复敲打，连续击打；击败；猛踢；

1. 锤击：摩擦尖叫噪声是一个涉及多学科交叉知识的问题 ,学术界提出 了6个摩擦噪声发生机理曲,分别为:粘一滑机理,摩擦力一相对滑动速度负斜率机理,自锁 一滑动(sprag.slip)机理,模态耦合机理,双模态分离(splitting the doublet modes)机理和锤击(hammering)机理.

2. 锻造：hammerforging 锤锻 | hammering 锻造 | hammermill 锤磨机

3. 锤打：hammering test 锤击试验 | hammering 锤打 | hammering 锻

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4. 锤锻：hammer scale 锻造氧化皮 | hammering 锤锻 | hand adjustment 手动蝶

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: hammerpoundpounding