平拉印花布

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.

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

锟斤拷锟节高匡拷坠锟斤拷要锟斤拷锟戒汉鍦ㄩ珮绌哄潬钀借澶氬皯绉掓墠鑳借皟鏁磋韩浣撳钩琛★拷锟斤拷锟斤拷艿锟斤拷锟斤拷锟斤拷锟狡斤拷锟 ...... 浜哄湪鑷敱闄嶈惤鏃剁殑鏈澶ч熷害绾︿负200KM/H,鍗56M/S宸﹀彸. 鏍规嵁鍏紡:V=gt t=V/g=56/9.8=5.7S 鍗5.7绉掑乏鍙冲彲浠ヨ揪鍒版渶澶ч熷害.

姹傚甫鏈夐洩瀛楃殑缃戝悕 - ...... 闆効.

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