何谓零起升压？零起升压的作用？
["\u7ed9\u8bbe\u5907\u7531\u96f6\u8d77\u9010\u6b65\u5347\u9ad8\u7535\u538b\u81f3\u9884\u5b9a\u503c\u6216\u76f4\u5230\u989d\u5b9a\u7535\u538b\uff0c\u4ee5\u786e\u8ba4\u8bbe\u5907\u65e0\u6545\u969c"]
何谓零起升压？零起升压的作用？
["\u7ed9\u8bbe\u5907\u7531\u96f6\u8d77\u9010\u6b65\u5347\u9ad8\u7535\u538b\u81f3\u9884\u5b9a\u503c\u6216\u76f4\u5230\u989d\u5b9a\u7535\u538b\uff0c\u4ee5\u786e\u8ba4\u8bbe\u5907\u65e0\u6545\u969c"]