In the second chapter, based on the articulation principle of piano this essay finds two major factors which influence the performance timbre: the movement of the piano 's hammer and pedal.
第二章，本文从钢琴的发音原理出发，寻找出主要影响演奏音色的两大要素：琴槌的运动方式和踏板的运用。
The greatest movement is caused by shock which can be controlled by the installation of water hammer arresters.
最大的移动是由水锤撞击引起的，它可以用安装水锤消除器的办法来控制。
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