垂直方向主频和水平切向主频都存在着末端放大现象，这与萨道夫斯基公式不符。
The main frequency of vertical direction and horizontal tangential direction both have phenomenon of end amplification which doesn't afford the sadov's formula.
笔者提出了沿垂直方向、水平径向和水平切向振动时不同距离地震波衰减规律的经验公式。
An empirical formula was derived, which indicated the attenuation of the seismic waves at different distances along the vertical, horizontal and horizontal tangential directions.
水平切向孔道的屏蔽采用旋转屏蔽门屏蔽，避免了活化后塞子取出物污染空间及取放塞子的不便。
In order to avoid the pollution of the extracting material and the inconvenience of fetching the plug, a rotating shielding door is used for the purpose of the horizontal tangential channel shielding.
水平切向孔道的屏蔽采用旋转屏蔽门屏蔽，避免了活化后塞子取出物污染空间及取放塞子的不便。
In order to avoid the pollution of the extracting material and the inconvenience of fetching the plug, a rotating shielding door is used for the purpose of the horizontal tangential channel shielding.
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