When positions of a microphone and a woofer are exchanged in a small rectangular room, a similar frequency response curve can be obtained.

在矩形小房间内，低音扬声器和传声器的位置互换后，测量得到的低音扬声器的频响曲线与互换前是一致的。

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The opening are well orientated, with sober rectangular proportions which do not overload the curve of the internal facades.

开口朝向良好，有合理的方形比例，不使内部表面的弯曲超出负荷。

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Flow velocity of fluid in eccentric spiral rectangular section channels varies in periodical non-linear relation with Angle of curve.

偏心螺旋矩形截面通道中流体速度随转角(弧度)呈非线性周期变化。

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