But their skin conductivity changed consistently even when they thought the chalkboard sound was from music and rated it as less unpleasant.

但是皮肤的导电性的变化是一致的，即使当他们以为黑板的声音是来自于乐曲，而且觉得它们也没有那么不悦耳。

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With light, small coefficient of thermal conductivity, sound absorption performance is good, not burning, the chemical stability is good wait for a characteristic.

具有质轻、导热系数小、吸声性能好、不燃、化学稳定性好等特点。

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