{"id":19753,"date":"2026-09-10T10:20:02","date_gmt":"2026-09-10T00:20:02","guid":{"rendered":"https:\/\/geoffreychen.com\/why-salt-melts-ice-but-stops-working-in-extreme-cold\/"},"modified":"2026-09-10T10:20:02","modified_gmt":"2026-09-10T00:20:02","slug":"why-salt-melts-ice-but-stops-working-in-extreme-cold","status":"publish","type":"post","link":"https:\/\/geoffreychen.com\/zh\/why-salt-melts-ice-but-stops-working-in-extreme-cold\/","title":{"rendered":"\u76d0\u4e3a\u4ec0\u4e48\u80fd\u878d\u51b0\uff0c\u5929\u6c14\u592a\u51b7\u65f6\u5374\u4e0d\u7075\uff1f"},"content":{"rendered":"<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/public-assets.geoffreychen.com\/wordpress\/articles\/why-salt-melts-ice-but-stops-working-in-extreme-cold\/392cc49b9b31c116657a3799.jpg?w=1140&#038;ssl=1\" alt=\"\u76d0\u4e3a\u4ec0\u4e48\u80fd\u878d\u51b0\uff0c\u5929\u6c14\u592a\u51b7\u65f6\u5374\u4e0d\u7075\uff1f\" loading=\"lazy\"><\/p>\n<p>\u5411\u7ed3\u51b0\u8def\u9762\u6492\u76d0\uff0c\u5e76\u4e0d\u662f\u76d0\u91ca\u653e\u70ed\u91cf\u628a\u51b0\u201c\u70e7\u5316\u201d\u3002\u5373\u4f7f\u57280\u2103\u4ee5\u4e0b\uff0c\u51b0\u8868\u9762\u901a\u5e38\u4ecd\u6709\u6781\u8584\u7684\u6db2\u6001\u6c34\u5c42\u3002\u6c2f\u5316\u94a0\u6eb6\u8fdb\u53bb\u5f62\u6210\u76d0\u6c34\u540e\uff0c\u6c34\u5206\u5b50\u8981\u6392\u5217\u6210\u89c4\u5219\u51b0\u6676\u53d8\u5f97\u66f4\u56f0\u96be\uff0c\u6db2\u76f8\u4e0e\u56fa\u76f8\u91cd\u65b0\u8fbe\u5230\u5e73\u8861\u6240\u9700\u7684\u6e29\u5ea6\u66f4\u4f4e\u3002\u8fd9\u53eb\u51dd\u56fa\u70b9\u964d\u4f4e\u3002<\/p>\n<p>\u4e8e\u662f\uff0c\u82e5\u73af\u5883\u6e29\u5ea6\u4f4e\u4e8e\u7eaf\u6c34\u51dd\u56fa\u70b9\u3001\u5374\u9ad8\u4e8e\u8fd9\u4efd\u76d0\u6c34\u7684\u51dd\u56fa\u70b9\uff0c\u4e00\u90e8\u5206\u51b0\u5c31\u4f1a\u878d\u5316\uff0c\u4f7f\u66f4\u591a\u76d0\u80fd\u591f\u6eb6\u89e3\u3002\u76d0\u8d8a\u5206\u6563\u3001\u8868\u9762\u6c34\u8d8a\u591a\uff0c\u4f5c\u7528\u901a\u5e38\u8d8a\u5feb\uff1b\u8fd9\u4e5f\u89e3\u91ca\u4e86\u9884\u5148\u914d\u6210\u7684\u76d0\u6c34\u4e3a\u4f55\u80fd\u6bd4\u5e72\u76d0\u66f4\u5feb\u63a5\u89e6\u8def\u9762\u3002<\/p>\n<p>\u4f46\u76d0\u4e0d\u662f\u65e0\u9650\u6709\u6548\u3002\u6e29\u5ea6\u7ee7\u7eed\u4e0b\u964d\uff0c\u80fd\u591f\u5b58\u5728\u7684\u6db2\u6001\u6c34\u8d8a\u6765\u8d8a\u5c11\uff0c\u76d0\u7684\u6eb6\u89e3\u548c\u6269\u6563\u90fd\u53d8\u6162\uff1b\u5230\u6c2f\u5316\u94a0\u2014\u6c34\u4f53\u7cfb\u7684\u6700\u4f4e\u51dd\u56fa\u6e29\u5ea6\u4ee5\u4e0b\uff0c\u8fde\u6700\u5408\u9002\u6d53\u5ea6\u7684\u76d0\u6c34\u4e5f\u4e0d\u80fd\u7ef4\u6301\u6db2\u6001\u3002NOAA\u7ed9\u51fa\u7684\u6c2f\u5316\u94a0\u76d0\u6c34\u6700\u4f4e\u51dd\u56fa\u70b9\u7ea6\u4e3a\u221221.1\u2103\u3002\u5b9e\u9645\u9053\u8def\u4f5c\u4e1a\u4f1a\u5728\u8fdc\u9ad8\u4e8e\u6b64\u6e29\u5ea6\u65f6\u5c31\u53d1\u73b0\u666e\u901a\u76d0\u6548\u7387\u660e\u663e\u4e0b\u964d\uff0c\u56e0\u4e3a\u901f\u5ea6\u3001\u6e7f\u5ea6\u3001\u4ea4\u901a\u548c\u8def\u9762\u6761\u4ef6\u4e5f\u5728\u8d77\u4f5c\u7528\u3002<\/p>\n<p>\u6240\u4ee5\u51c6\u786e\u8bf4\u6cd5\u4e0d\u662f\u201c\u76d0\u8ba9\u51b0\u4e0d\u518d\u7ed3\u51bb\u201d\uff0c\u800c\u662f\u201c\u76d0\u628a\u7ed3\u51bb\u6761\u4ef6\u63a8\u5411\u66f4\u4f4e\u6e29\u201d\u3002\u540c\u4e00\u539f\u7406\u4e5f\u7528\u4e8e\u51b0\u6dc7\u6dcb\u5236\u4f5c\uff1a\u76d0\u4f7f\u51b0\u6c34\u6df7\u5408\u7269\u53ef\u4ee5\u51b7\u52300\u2103\u4ee5\u4e0b\uff0c\u800c\u4e0d\u662f\u8ba9\u5b83\u53d8\u70ed\u3002<\/p>\n<p><a href=\"https:\/\/www.noaa.gov\/\" rel=\"nofollow\">https:\/\/www.noaa.gov\/<\/a><br \/><a href=\"https:\/\/salinity.oceansciences.org\/\" rel=\"nofollow\">https:\/\/salinity.oceansciences.org\/<\/a><\/p>\n<p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"Salt melts ice by forming brine with a lower freezing point, not by heating it; 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