punching matrix
... puncher 穿孔机 punching matrix 穿孔矩阵 punching track 穿孔导轨 ...
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本文通过声波在穿孔声管中传播特性的研究,导出了声波在穿孔声管中传播的声场传递矩阵。
The sonic field transmission matrixes of perforated absorbent pipe is given after the transmission performance of perforated pipe is studied.
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