The finger appears as 2 orders mechanical impedance when it contacts with an obstacle.

当手指与障碍物接触时，呈现出2阶机械阻抗特性。

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The important mechanical properties of Larch with finger joint were studied in this research.

本文主要研究了落叶松指接材的主要力学性质。

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And in order to reduce mechanical "noise" from extraneous finger motions, the fingers should be on the keys as much as possible.

为了减少手指的多余动作带来的机械“噪声”手指应该尽量保持在琴键上。

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