æ¡åå¢ææ»,æå¾è¦,
å°åºæ¿è½½å,å¢èº«å¼ºåº¦ä¸è¶³æ¶,æå·§æï¼
1ãæ©å±æ¡åå¢åºç¡çå¢è¶¾ï¼å½åæ§åºç¡çå¢è¶¾æ©å±ååæ§è§éå¶æ¶ï¼å¯éç¨é
çæ©å±åºç¡ã
2ãè°æ´å¢é¢ãå¢èå¡åº¦ã
3ãæ¹åå¢èº«å½¢å¼ï¼å¯éç¨è¡¡éå¼ãæ¶å£å¼çæå¾è¦ç¨³å®æ§è¾å¼ºçæ¡åå¢å½¢å¼ã
æ¡åå¢æ¯ææ¯æ¿è·¯åºå¡«åæå±±å¡åä½ãé²æ¢å¡«åæåä½å形失稳çæé ç©ã
å¨æ¡åå¢æ¨ªæé¢ä¸ï¼ä¸è¢«æ¯æ¿åä½ç´æ¥æ¥è§¦çé¨ä½ç§°ä¸ºå¢èï¼ä¸å¢èç¸å¯¹çã临空çé¨ä½ç§°ä¸ºå¢é¢ï¼ä¸å°åºç´æ¥æ¥è§¦çé¨ä½ç§°ä¸ºåºåºï¼ä¸åºåºç¸å¯¹çãå¢ç顶é¢ç§°ä¸ºå¢é¡¶ï¼åºåºçå端称为å¢è¶¾ï¼åºåºçå端称为å¢è¸µã