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PCM\u4f20\u8f93\u4fe1\u566a\u6bd4\u4e0e\u8bef\u7801\u7387\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u6570\u5b57\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u8d28\u91cf\uff0c\u4ee5\u53ca\u4f20\u8f93\u7cfb\u7edf\u7684\u9650\u5236\uff0c\u5e76\u4e14\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3\u4fe1\u53f7\u7684\u6709\u6548\u6027\u548c\u53ef\u9760\u6027\u3002PCM\u4f20\u8f93\u4fe1\u566a\u6bd4\u4e0e\u8bef\u7801\u7387\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8bc4\u4f30\u6570\u5b57\u4fe1\u53f7\u7684\u8d28\u91cf\uff0c\u4ece\u800c\u66f4\u597d\u5730\u63a7\u5236\u548c\u4f18\u5316\u4f20\u8f93\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n
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