å¨ç°æµæ¿æçæ¿åºç¡ä¸ï¼å¸ç½®åå±ååé¢çï¼ä¸å±å¨åºé¨çååç称为åºçï¼å¨å¾ä¸è¡¨ç¤ºæ¶ä¸è¬ä¸¤ç«¯ä¸ºåå弯å¾ï¼æ135度弯æï¼ä¸å±æ¯å¨æ¿æåºç¡é¡¶é¨çé¢çï¼ç§°ä¸ºé¢çï¼å®å¨å¾çº¸ä¸ä¸è¬æ¯ä¸¤ç«¯æ90度çåç´å¼¯æã
ããå¸ç½®å¨æ¿åºç为åºçï¼æä¿æ¤å±ï¼ï¼å¸ç½®å¨åºçä¹ä¸ç为é¢çï¼èæ¿çå¾ä¸ä¸è¬é½ä¸ä¼ç´æ¥å¸ç½®åºæ¥ï¼èæ¯ç¨æåæ¥è¯´æï¼åå±ååçå¸ç½®å°±æ¯åºçåé¢çæ°´å¹³ååç´æ¹åé½è¦å¸ç½®ã
温馨提示:答案为网友推荐,仅供参考