Õˆ†– ÓÐÁ˽â AB ϵ½y(t¨¯ng)µÄô£¿
±ÈÈçÓ|°l(f¨¡)Ò»‚€ˆó¾¯×ƒÁ¿£¬ˆó¾¯ï@ʾƒÈÈÝ¡°šâ‰ºß^µÍ¡±£¬
ÇГQÕZÑÔÖÁÓ¢ÎÄ£¬ß@‚€ˆó¾¯Îı¾›]ÓиúëSÕZÑÔ׃»¯£¬ß€ÊÇï@ʾ¡°šâ‰ºß^µÍ¡±£»
ÐèÒªÏÈÇГQµ½ÏëÒªµÄÕZ·N£¬ÔÙ´ÎÓ|°l(f¨¡)ˆó¾¯×ƒÁ¿£¬²ÅÄÜï@ʾÏëÒªµÄÕZÑÔÎı¾¡°air low¡±
Õˆ†–ÓÐÞk·¨¸ÄÉÆô£¿
´ËÍ⣬ģ”MÆ÷²»ÄܸÄ׃´óС£¿Ò²²»ÄÜÒÆ„ÓλÖã¿