yīn chā
意思解释：（Tonometer）不受一般温差影响的，有两个叉头的金属器具，敲击后发出几乎不受谐音影响的持续的固定音，可用于乐器的调音和确定标准音高。
能发声的钢质仪器，形状像叉子，用小木槌敲打发出声音。1901年《格物质学·声学》:“以音叉近桌面颤动发声更大，因叉之颤传至桌，桌之颤面更大，激动空气故多也。”1913年《民国新教科书·物理学》第二章:“将音叉由其叉架上拔下…
The steel qualitative instrument that can phonate, appearance resembles broach, beat with small mallet sound. 1901 does case material learn · acoustics : Make of prostitute breaking Ban smooth with a rake to rot phosphor of of of of Ma of ancient name for a kind of scorpion of of Xi of of of ⑸ of Li breaks through of palm of of ざ of of Xi of of Wei of of happy to know Qi disease! 913 year physics of · of book of division of Protestantism of the Republic of China : of the 2nd chapter Grand of cochlea of be used to of Chang of Jie of Ru of be apt to of Shan of Ao Ban
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