These provide theoretical calculation basis for analysis of high mode flexural vibration of plate and design of big round plate and multi nodal compound flexural ultrasonic transducer.
对薄板的高次弯曲振动模式的分析及大圆盘、多波节复合弯曲超声换能器的设计提供了理论计算依据。
The children sat down round a small table and began to feed off a big plate.
孩子们围坐在一张小桌子边，开始吃大盘子里的东西。
The children sat down round a small table and began to feed off a big plate.
孩子们围坐在一张小桌子边，开始吃大盘子里的东西。
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