介绍一种适合回柱器斜拉特点的自紧挂具，阐述其结构特点及使用效果。
The paper introduces a self_taut by hanging tool which is appropriate for oblique pull characteristic of prop drawer, structure characteristic and using effect are expounded.
四根琴弦的振动通过琴马传送到小提琴的面板，并在通过声柱传回声音回背板，声柱是音箱中一段嵌在面板和背板之间的圆木。
Vibrations from the four strings are transmitted via the bridge to the front of the violin, and on to the back via the sound-post, a length of round wood wedged between front and back inside the box.
如果它再等上几分之一秒，重力的作用将压倒惯性而破坏液柱，液体会落回碗里，而小猫的舌头则扑了个空。
If it waits another fraction of a second, the force of gravity will overtake inertia, causing the column to break, the liquid to fall back into the bowl, and the cat's tongue to come up empty.
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