两è
æä¸ç¹ä¸åï¼ï¼1ï¼æµéç´è§åæ ç³»æ¯ä»¥è¿åç¹çåå线å³åå线为纵åæ è½´ï¼å®ä¸ºXè½´ï¼è¿åç¹ä¸è¥¿çº¿ä¸ºæ¨ªåæ è½´ï¼å®ä¸ºYè½´ï¼æ°å¦ç´è§åæ 系横åæ 轴为Xè½´ï¼çºµåæ 轴为Yè½´ï¼ãï¼2ï¼æµéç´è§åæ ç³»æ¯ä»¥Xè½´æ£å为å§è¾¹ï¼é¡ºæ¶éæ¹å转å®æ¹ä½è§ÏåIãIIãIIIãIV象éï¼æ°å¦ç´è§åæ ç³»æ¯ä»¥Xè½´æ£å为å§è¾¹ï¼éæ¶éæ¹å转å®å¾æè§Î¸ï¼åIãIIãIIIãIV象éï¼ãï¼3ï¼æµéç´è§åæ ç³»åç¹Oçåæ ï¼x0ï¼y0ï¼å¤ä¸ºä¸¤ä¸ªå¤§æ£æ´æ°ï¼å¦å京å建åæ ç³»åç¹åæ y0=500000mï¼x0=300000mï¼æ°å¦åæ åç¹çåæ æ¯x0=0ï¼y0=0ï¼ã
åèèµæï¼ãæµéæ¾çº¿å·¥ã2008å¹´7æ第ä¸æ¬¡å°å·çææP63页详ç»è¯´æ