{"id":1539,"date":"2008-02-21T09:57:22","date_gmt":"2008-02-21T01:57:22","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=1539"},"modified":"2021-10-06T15:58:21","modified_gmt":"2021-10-06T07:58:21","slug":"%e5%a3%93%e5%8a%9b-%e3%80%88pressure%e3%80%89","status":"publish","type":"post","link":"http:\/\/localhost\/%e5%a3%93%e5%8a%9b-%e3%80%88pressure%e3%80%89\/","title":{"rendered":"\u58d3\u529b"},"content":{"rendered":"

\u58d3\u529b (Pressure)<\/strong><\/span>
\n\u81fa\u4e2d\u7e23\u5e38\u6625\u85e4\u9ad8\u7d1a\u4e2d\u5b78\u674e\u54c1\u6167\u6559\u5e2b\/\u570b\u7acb\u5f70\u5316\u5e2b\u7bc4\u5927\u5b78\u7269\u7406\u7cfb\u6d2a\u9023\u8f1d\u6559\u6388\u8cac\u4efb\u7de8\u8f2f<\/span><\/p>\n

\u58d3\u529b\uff08\u901a\u5e38\u4ee5 $$P$$ \u4f86\u8868\u793a\uff09\u662f\u55ae\u4f4d\u9762\u7a4d\u4e0a\u6240\u53d7\u7684\u6b63\u5411\u529b\u3002<\/p>\n

\u5b9a\u7fa9\uff08\u516c\u5f0f\uff09\uff1a$$\\displaystyle P=\\frac{F}{A}$$<\/p>\n

$$P$$ \u70ba\u58d3\u529b\u3001$$F$$ \u70ba\u6b63\u5411\u529b\u3001$$A$$ \u70ba\u9762\u7a4d<\/p>\n

\u58d3\u529b\u662f\u4e00\u500b\u7d14\u91cf\uff0c\u5176 SI \u5236\u55ae\u4f4d\u70ba\u5e15 ($$Pa$$)\u3002$$1~Pa=1~N\/m^2$$<\/p>\n

\u58d3\u529b\u53ef\u4ee5\u50b3\u905e\u81f3\u6d41\u9ad4\u7684\u5404\u500b\u90e8\u5206\u548c\u5bb9\u5668\u58c1\uff0c\u5b83\u662f\u71b1\u529b\u5b78\u7684\u57fa\u672c\u53c3\u6578\u3002<\/p>\n

\u55ae\u4f4d\uff1a<\/span><\/strong><\/p>\n

\u58d3\u529b\u7684 SI \u55ae\u4f4d\u70ba\u5e15 $$(Pa)$$\uff0c\u76f8\u7576\u65bc\u6bcf\u5e73\u65b9\u516c\u5c3a\u4e00\u725b\u9813\u7684\u529b ($$N\/m^2$$\u00a0\u6216 $$kg\/ms^2$$)\uff0c\u9019\u500b\u7279\u6b8a\u7684\u540d\u5b57\u662f 1971 \u5e74\u624d\u88ab\u52a0\u4e0a\u53bb\u7684\uff0c\u904e\u53bb SI \u5236\u7684\u58d3\u529b\u55ae\u4f4d\u53ea\u7c21\u55ae\u5730\u8868\u793a\u70ba $$N\/m^2$$\u3002<\/p>\n

\u4e16\u754c\u4e0a\u6709\u4e9b\u5730\u65b9\u4f7f\u7528\u975e SI \u5236\u7684\u55ae\u4f4d\u5982\u6bcf\u5e73\u65b9\u82f1\u540b $$1$$ \u78c5\u7684\u529b $$(psi)$$ \u548c\u5df4 $$(bar)$$\u3002\u58d3\u529b\u7684 CGS \u55ae\u4f4d\u70ba\u5fae\u5df4 $$(ba)$$\uff0c\u76f8\u7576\u65bc\u6bcf\u5e73\u65b9\u516c\u5206 $$1$$ \u9054\u56e0\u7684\u529b $$(1~dyne\/cm^2)$$\u3002\u58d3\u529b\u6709\u6642\u53ef\u8868\u793a\u70ba\u6bcf\u5e73\u65b9\u516c\u5206 $$1$$ \u514b\u7684\u529b $$(grams \\text{-} force\/cm^2)$$ \u6216\u6bcf\u5e73\u65b9\u516c\u5206 $$1$$ \u516c\u65a4\u7684\u529b $$(kg\/cm^2)$$\uff0c\u6709\u6642\u7701\u7565 $$force$$\uff0c\u7136\u800c SI \u5236\u4e0d\u53ef\u4f7f\u7528 $$kg$$\u3001$$g$$\u3001$$kg\\text{-}force$$ \u6216 $$g\\text{-}force$$\u3002<\/p>\n

\u6c23\u8c61\u5b78\u5bb6\u559c\u6b61\u7528\u767e\u5e15 $$(hPa)$$ \u4f5c\u70ba\u6c23\u58d3\u7684\u55ae\u4f4d\uff0c\u5b83\u76f8\u7576\u65bc\u820a\u55ae\u4f4d\u6beb\u5df4 $$(mbar)$$\u3002\u5176\u4ed6\u9818\u57df\u5247\u8f03\u5e38\u4f7f\u7528\u5343\u5e15 $$(kPa)$$\uff0c\u800c\u4e0d\u7528\u767e\u5e15\u3002\u7f8e\u570b\u4ecd\u7136\u4f7f\u7528\u82f1\u540b\u6c34\u9280\u67f1 $$(inHg)$$\u3002\u6d77\u6d0b\u5b78\u5bb6\u559c\u6b61\u7528\u5206\u5df4 $$(dbar)$$ \u91cf\u6e2c\u6d77\u5e95\u6c34\u58d3\uff0c\u56e0\u70ba\u6bcf\u589e\u4e00\u516c\u5c3a\u6c34\u6df1\uff0c\u58d3\u529b\u7d04\u589e\u4e00\u5206\u5df4\u3002\u5e36\u6c34\u80ba\u7684\u6f5b\u6c34\u8005\u5e38\u4f7f\u7528\u4ee5\u4e0b\u7684\u7d93\u9a57\u6cd5\u5247\uff1a\u6c34\u6df1\u589e\u52a0\u5341\u516c\u5c3a\uff0c\u58d3\u529b\u7d04\u589e\u4e00\u5927\u6c23\u58d3\u3002<\/p>\n

\u6a19\u6e96\u5927\u6c23\u58d3 $$(atm)$$ \u662f\u4e00\u500b\u5e38\u6578\uff0c\u5927\u7d04\u70ba\u6d77\u5e73\u9762\u4e0a\u7684\u5e73\u5747\u5927\u6c23\u58d3\uff0c\u5176\u5b9a\u7fa9\u5982\u4e0b\uff1a<\/p>\n

$$1$$ \u6a19\u6e96\u5927\u6c23\u58d3 $$=$$ $$101325$$ \u5e15 $$(Pa)$$ $$=$$ $$101.325$$ \u5343\u5e15 $$(kPa)$$ $$=$$ $$1013.25$$ \u767e\u5e15 $$(hPa)$$<\/p>\n

\u58d3\u529b\u8a08\u4e2d\u5e38\u4ee5\u6db2\u67f1\u7684\u9ad8\u5ea6\u4f86\u91cf\u5ea6\u58d3\u529b\uff0c\u56e0\u6b64\u58d3\u529b\u4e5f\u53ef\u7528\u67d0\u7279\u5b9a\u6db2\u9ad4\u7684\u6df1\u5ea6\u4f86\u8868\u793a\uff08\u5982\u6c34\u6df1\u591a\u5c11\u82f1\u540b\uff09\uff0c\u6700\u5e38\u7528\u7684\u70ba\u6c34\u9280 (Hg) \u548c\u6c34\uff0c\u6c34\u7121\u6bd2\u6027\u4e14\u6613\u89c0\u6e2c\uff0c\u800c\u6c34\u9280\u7684\u5bc6\u5ea6\u9ad8\uff0c\u7528\u8f03\u77ed\u7684\u6df1\u5ea6\u5373\u53ef\u91cf\u6e2c\u7d66\u5b9a\u7684\u58d3\u529b\u3002<\/p>\n

\u9ad8\u5ea6 $$h$$\uff0c\u5bc6\u5ea6 $$\\rho$$ \u7684\u6db2\u67f1\u6240\u7522\u751f\u7684\u58d3\u529b\u53ef\u7531\u975c\u6b62\u6d41\u9ad4\u58d3\u529b\u65b9\u7a0b\u5f0f $$p=\\rho gh$$\u00a0\u5f97\u51fa\uff0c\u6d41\u9ad4\u5bc6\u5ea6\u8207\u7576\u5730\u7684\u91cd\u529b\u96a8\u8457\u5730\u9ede\u800c\u6539\u8b8a\uff0c\u56e0\u6b64\u6db2\u67f1\u9ad8\u5ea6\u4e26\u4e0d\u80fd\u7cbe\u78ba\u5730\u5b9a\u7fa9\u58d3\u529b\u7684\u6578\u503c\u3002\u7576\u6211\u5011\u4f7f\u7528\u516c\u5398\u6c34\u9280\u67f1\u6216\u82f1\u540b\u6c34\u9280\u67f1\u6642\uff0c\u4e26\u975e\u6307\u5be6\u969b\u7684\u6c34\u9280\u67f1\uff0c\u800c\u662f SI \u5236\u88e1\u660e\u78ba\u5b9a\u7fa9\u7684\u55ae\u4f4d\uff0c\u81f3\u65bc\u6c34\u67f1\u5247\u9700\u91cf\u6e2c\u7576\u6642\u5be6\u969b\u6c34\u7684\u5bc6\u5ea6\u3002\u9019\u4e9b\u58d3\u529b\u8a08\u7684\u55ae\u4f4d\u5728\u5176\u4ed6\u9818\u57df\u4e5f\u5e38\u88ab\u4f7f\u7528\uff0c\u8840\u58d3\u5e38\u4ee5\u516c\u5398\u6c34\u9280\u67f1\u4f86\u8868\u793a\uff0c\u80ba\u58d3\u5e38\u4ee5\u516c\u5206\u6c34\u67f1\u4f86\u8868\u793a\u3002<\/p>\n

\n

\u53c3\u8003\u8cc7\u6599<\/strong>
\nhttp:\/\/en.wikipedia.org\/wiki\/Pressure<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

\u58d3\u529b (Pressure) \u81fa\u4e2d\u7e23\u5e38\u6625\u85e4\u9ad8\u7d1a\u4e2d\u5b78\u674e\u54c1\u6167\u6559\u5e2b\/\u570b\u7acb\u5f70\u5316\u5e2b\u7bc4\u5927\u5b78\u7269\u7406\u7cfb\u6d2a\u9023\u8f1d\u6559\u6388\u8cac\u4efb\u7de8\u8f2f \u58d3\u529b\uff08\u901a…<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,15,107],"tags":[1079,1036,2301],"class_list":["post-1539","post","type-post","status-publish","format-standard","hentry","category-physics02","category-physics02-01","category-physics00","tag-pressure","tag-1036","tag-2301","loop-entry","cat-14","cat-15","cat-107","no-thumbnail"],"views":8338,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/comments?post=1539"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1539\/revisions"}],"predecessor-version":[{"id":85439,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1539\/revisions\/85439"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=1539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=1539"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=1539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}