双面小风眼

渚涚ǹ锛歨z-xin.com     鏃ユ湡锛2022-06-30

鏈夎繖鏍蜂竴閬撻:璁$畻(2x锟斤拷 - 3x锟斤拷y - 2xy锟斤拷) - (x锟斤拷 - 2xy锟斤拷 y锟斤拷) ( - x锟斤拷 3x锟斤拷y - y锟斤拷)鐨勫,鍏朵腑x=锟斤拷,y= - 1 鐢插悓瀛︽妸x=锟斤拷閿欐妱鎴恱= - 锟斤拷,浣嗕粬鐨... - ...... [绛旀] 鍘熷紡鍖栫畝,缁撴灉涓嶅惈x,涓巟鏃犲叧.鏄庣櫧.璇炬湰117涔熺14棰.瀵瑰惂? 鍙互鑷繁鍖栫畝鍚! 鍘熷紡=鈥︹ =-2y鲁 鏄剧劧涓巟鏃犲叧.

Mpa锟6锟6Kpa锟6锟6um锟6锟6Kv閮芥槸浜涗粈涔堟剰鎬? ...... 鍘嬪己鍗曚綅.1kpa=1000pa ,, 1mpa=1000000pa

鍏充簬娆у鐨勫崟浣嶆崲绠(鐢甸樆鐜)n惟锟斤拷m鏄粈涔堢殑鍗曚綅?鎹㈢畻鎴愇╋拷锟絤m2/m鎬庝箞绠? - ...... [绛旀] R=蟻l/s 鍏朵腑l涓洪暱搴 s涓烘í鎴潰绉 R涓虹數闃诲ぇ灏 蟻涓虹數闃荤巼 鎵浠ハ=RS/l杩欐槸鐢甸樆鐜囩殑鍏紡

锟斤拷知锟斤拷锟斤拷 - ...... [鍥炬枃] 棰樼洰 锟斤拷知锟芥壂鐮佷笅杞 鎼滅储绛旂枒涓鎼滃嵆寰

鍦嗛敟鏇茬嚎鏂圭▼姹傚鍏充簬鍦嗛敟鏇茬嚎鏂圭▼鐨勬眰瀵间緥濡:X锟斤拷/a锟斤拷+Y锟斤拷/b锟斤拷=1 姹傛き鍦嗕笂涓鐐圭殑鍒囩嚎鏂圭▼.鍔犲叆宸茬煡a銆乥鍜屽渾涓婁竴鐐筆(X1,Y1)鎬庝箞閫氳繃姹傚鏉... - ...... [绛旀] 妞渾鏇茬嚎杩欎釜闂 鏈绠鍗曠殑鏄槸灏嗗師鏂圭▼鍙樻垚鍙傚彉閲忔柟绋嬪埄鐢ㄥ弬鏁扮殑姹傚娉曞垯鏉ユ眰瀵(dy/dt)/(dt/dx)杩欐牱鏄渶绠鍗曠殑姹傛硶.褰撶劧妤间笅鐨勬柟娉曟槸 鍏充簬鍋忓鏁扮殑鍐呭,寤鸿浣犺嚜宸变粩缁嗗幓鐪嬩竴涓.杩欐牱灏变笉浠呬粎浼氳繖鏍蜂竴閬撻浜 鑰屾槸涓绫婚浜

鍙斿彅 闊╄鎬庝箞鍐? - ...... 鍙斿彅 锟2锟3锟3锟3锟2锟5 ajeossi澶у┒ 锟3锟3锟0锟7 imo浼集 澶т集 澶у彅 锟2锟3锟3锟3锟2锟5 ajeossi

锟藉瓡濡囦竴鑸嚑涓湀鍙互鐪嬭鑲氬瓙?懈锟揭伙拷慵革拷锟斤拷驴锟斤拷钥锟斤拷锟斤拷锟接o拷 ...... 鏈夌殑浜3涓鏈堝氨浼氭樉鐐,鏈夌殑瑕4涓鏈

淇濆畾鐨勬灄鏈ㄦ槸鐢卞摢浜涙爲绉嶆瀯鎴愶拷锟斤拷锟斤拷锟斤拷锟侥撅拷锟斤拷锟斤拷锟叫╋拷锟斤拷止锟斤拷锟 ...... 鏉俱佹潐銆佹煆

鍐嶈 鐢ㄥ叾浠栧浗瀹剁殑璇█ 鎬庝箞璇 ...... 涓枃:鍐嶈 娉曡:au revoir!鍐嶈 a demain!鏄庡ぉ瑙 salut 鏃㈡槸鐔熶汉闂ソ涔熸槸鐔熶汉鍛婂埆鐨勬柟寮 寰疯:auf wiedersehen 鏃ヨ:銇 銈 銇 銇 銈! 绋嶆劅浜插垏鐨勮娉(sa yo na la) 銇樸們銇傘伃濂藉弸涔嬮棿(jia nei) 銇俱仧銇ソ鍙,鍚屽涔嬮棿(ma ta nei) 闊╄...