来自《耶鲁大学开放课程：聆听音乐 第18集 第18集》
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that anchor the strings are going to be来固定的 -
Most of the problems--通常情况下 -
if you think you've got a deal on a piano sometime,你准备买钢琴的话 -
check your pin block, because you probably don't请先检查弦轴板 很多人不懂这招 -
It probably has cracks in it它可能有裂纹 -
and then you go to tighten that thing,然后你将它拧紧 -
get your instrument tuned, the next day it's back out of tune然后将钢琴调好 但第二天又跑调了 -
because that pin block is not holding因为弦轴板没有很好地支撑 -
So you have to have a very secure pin block所以你需要一块非常牢固的弦轴板 -
You have to have a big resonator你需要一个大个的共鸣装置 -
and in order for that to be helpful on--为了让它得到牢固支撑 -
you need the cast iron frame underneath你还需要在它下面加一个铸铁框