ÌâÄ¿ÄÚÈÝ
£¨2013½ËÕ»´°²µ÷ÑУ©Èçͼ£¬°å³¤ÎªL¡¢¼ä¾àΪdµÄƽÐнðÊô°åˮƽ·ÅÖã¬Á½°å¼äËù¼Óµçѹ´óСΪU£¬×ã¹»´ó¹âÆÁPQÓë°åµÄÓÒ¶ËÏà¾àΪa£¬ÇÒÓë°å´¹Ö±¡£Ò»´øÕýµçµÄÁ£×ÓÒÔ³õËÙ¶È0ÑØÁ½°å¼äµÄÖÐÐÄÏßÉäÈ룬Éä³öµç³¡Ê±Á£×ÓËٶȵÄƫת½ÇΪ37¡ã¡£ÒÑÖªsin37¡ã=0.6£¬cos37¡ã=0.8£¬²»¼ÆÁ£×ÓµÄÖØÁ¦¡£
¢ÅÇóÁ£×ӵıȺÉq/m£»
¢ÆÈôÔÚÁ½°åÓÒ²àMN¡¢¹âÆÁPQ¼ä¼ÓÈçͼËùʾµÄÔÈÇ¿´Å³¡£¬ÒªÊ¹Á£×Ó²»´òÔÚ¹âÆÁÉÏ£¬Çó´Å³¡µÄ´Å¸ÐӦǿ¶È´óСBµÄÈ¡Öµ·¶Î§£»
¢ÇÈôÔÚÁ½°åÓÒ²àMN¡¢¹âÆÁPQ¼ä½ö¼Óµç³¡Ç¿¶È´óСΪE0¡¢·½Ïò´¹Ö±Ö½ÃæÏòÍâµÄÔÈÇ¿µç³¡¡£Éè³õËٶȷ½ÏòËùÔÚµÄÖ±ÏßÓë¹âÆÁ½»µãΪOµã£¬È¡OµãΪ×ø±êԵ㣬ˮƽÏòÓÒΪxÕý·½Ïò£¬´¹Ö±Ö½ÃæÏòÍâΪzÖáµÄÕý·½Ïò£¬½¨Á¢ÈçͼËùʾµÄ×ø±êϵ£¬ÇóÁ£×Ó´òÔÚ¹âÆÁÉϵÄ×ø±ê£¨x£¬y£¬z£©¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿