物理公式后面加(SI)是什么意思啊。表示一个式子的意思？ 大学物理中机械波表达式后的SI是什么意思
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是国际标准单位制的意思
绛旓細琛ㄧず鍥介檯鏍囧噯鍗曚綅鍒
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绛旓細鍦ㄥ浗闄呭崟浣嶅埗(SI)涓,涓冧釜鍩烘湰鐗╃悊閲忛暱搴︺佽川閲忋佹椂闂淬佺數娴併佺儹鍔涘娓╁害銆佺墿璐ㄧ殑閲忋 鍙戝厜寮哄害鐨勯噺绾茬鍙峰垎鍒槸l銆乵銆乼銆乮銆丵銆丯鍜孞銆 灏嗕竴涓墿鐞嗗鍑洪噺鐢ㄨ嫢骞蹭釜鍩烘湰閲忕殑涔樻柟涔嬬Н琛ㄧず鍑烘潵鐨勮〃杈惧紡,绉颁负璇ョ墿鐞嗛噺鐨勯噺绾插紡,绠绉伴噺绾(dimension)銆 閲忕翰鍙堢О涓哄洜娆°傚畠鏄湪閫夊畾浜嗗崟浣嶅埗涔嬪悗, 闂涓:浠涔堟槸...
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绛旓細SI: 16浣嶅瘎瀛樺櫒,婧愬彉鍧瀵勫瓨鍣 DI: 16涓哄瘎瀛樺櫒,鐩殑鍙樺潃瀵勫瓨鍣 BX: 16浣嶅瘎瀛樺櫒(鍙垎鎴2涓8浣嶅瘎瀛樺櫒BH,BL),鍩哄潃瀵勫瓨鍣 BP: 16浣嶅瘎瀛樺櫒,鍩哄潃鎸囬拡瀵勫瓨鍣 SS : 16浣嶆瀵勫瓨鍣紝浣滅敤鏄瓨鏀惧綋鍓嶅爢鏍堟鐨勬鍦板潃锛屼竴鑸拰SP杩炵敤 DS: 16涓烘瀵勫瓨鍣, 浣滅敤鏄瓨鏀惧綋鍓嶆暟鎹鐨勬鍦板潃 2.鎬庢牱鏍...
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绛旓細鍦鐗╃悊瀛︿腑锛宻=浜屽垎涔嬩竴锛坰澹+S杞)鍜宻=浜屽垎涔嬩竴锛坰澹-S杞)鏄袱涓鍏紡锛岀敤浜庤绠楀０闊崇殑澶氭櫘鍕掓晥搴斻傚０闊崇殑澶氭櫘鍕掓晥搴旀槸鎸囧綋澹版簮鍜屽惉鑰呯浉瀵硅繍鍔ㄦ椂锛屽０闊崇殑棰戠巼鍜屾尝闀夸細鍙戠敓鍙樺寲銆俿鏄０闊崇殑娉㈤暱锛寁鏄０闊冲湪浠嬭川涓殑閫熷害锛寁杞︽槸杞﹁締鐨勯熷害锛寁澹版槸澹版簮鐨勯熷害銆傚湪绗竴涓叕寮忎腑锛屽０婧愬拰鍚呮湞鐫鍚...
绛旓細2.1960骞达紝鍥介檯涓婇氳繃浜嗕竴濂楃粺涓鐨勬祴閲忔爣鍑嗭紝鍙浗闄呭崟浣嶅埗锛坕nternational system of units锛夌畝绉SI銆3.1m=10dm=100cm=1000mm 4.鍦鐗╃悊瀛︿腑锛岀敤閫熷害锛岀骇鍗曚綅鏃堕棿鍐呴氳繃鐨勮矾绋嬬殑澶氬皯锛屾瘮杈冪墿浣撹繍鍔ㄧ殑蹇參銆5.V=S闄や互t 鍗筹細閫熷害绛変簬璺▼闄や互鏃堕棿 6.澹伴煶鏄敱鐗╀綋闇囧姩浜х敓鐨勩7.澹伴煶鍙互鍦ㄧ┖姘斾腑浼犳挱...
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绛旓細SIII=S3-S2鈥SI=S1=v0t+at2 SII=S2-S1=v0(2t)+ a(2t)2-(v0t+ at2)=v0t+ at2 SIII=S3-S2=v0(3t)+ a(3t)2-v0(2t)- a(2t2)=v0t+at2鈥︹柍S=SII-SI=SIII-SII=鈥=at2 鍋氬寑鍙橀熺洿绾胯繍鍔ㄧ殑鐗╀綋锛屼换鎰忎袱涓浉绛夋椂闂撮棿闅攎銆乶 Sm-Sn=(m-n)at2 a=(Sm-Sn)/((m-n)*t^...
