keystroke

In order to find out quick eggshell crack detection nondestructively for on-line application, frequency responses of an egg excited with a light mechanical impact at different locations on the eggshell were studied.

结果表明:敲击赤道不同的部位,完好鸡蛋各点的特征响应频率十分接近,而壳裂鸡蛋差别较大。

One that raps or strikes, especially a door knocker.

敲击者敲击或打击的人，尤指敲门者

A knocking or tapping sound.

敲击声敲击或叩击发出的声音

To strike(a bell) to produce music.

敲击敲击（一只钟）从而奏出音乐

The sound of a sharp tap on a hard surface;a rap.

敲击声在坚硬的表面上的急促敲击的声音；敲击声

Knock. Opens locked or psionically locked doors.

敲击术：敲开锁或以灵能锁住的门。

sound the wheels of a train,ie by striking them

敲击火车车轮进行检查.

She banged the keys of the piano.

她用力敲击钢琴键。

A pulsation produced by beating.

振动敲击产生的振动

The rain drummed upon the windowpane.

雨点敲击着窗玻璃。

He was hammering at the keys.

他在使劲敲击琴键。

The drum is a percussion instrument.

鼓是一种敲击乐器。

the sound made by a gentle blow.

轻轻敲击发出的声音。

The monitor rapped the meeting to order.

班长啪啪敲击宣布开会。

warm up a connection

敲击螺纹接头使之松动

The drummers beat out their tropical music.

鼓手敲击出热带音乐。

To make heavy, cutting strokes.

进行沉重、砍劈性的敲击

He clanged the fire bell.

他当当敲击火警钟。

Smith batted the table with his fist.

史密斯用拳头敲击桌子。