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心(xīn )脏(zāng )收(shōu )缩(suō )和(hé )舒(shū )张(zhāng )时(shí )发(fā )出(chū )的(de )声(shēng )音(yīn )。收(shōu )缩(suō )时(shí )其(qí )音(yīn )低(dī )沉(chén )而(ér )长(zhǎng )，舒(shū )张(zhāng )时(shí )其(qí )音(yīn )清(qīng )晰(xī )而(ér )短(duǎn )。心(xīn )脏(zāng )发(fā )生(shēng )病(bìng )变(biàn )时(shí )会(huì )有(yǒu )杂(zá )音(yīn )。

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●心音（简体版）