ç½ç²æ¯ä¸å¹´çèæ¬ãèé«30-80åç±³ï¼åæï¼æ伸å±çç³æ¯ãå¶äºçï¼ç¾½ç¶æ·±è£ï¼è£çæ«éå½¢ææ¡ç¶æ«éå½¢ï¼ä¸¤é¢æç³æ¯ãè±è¾åµçå½¢ï¼æé¿æ¢ï¼æªå¼æ¾æ¶ä¸åï¼è¼ç绿è²ï¼è±å¼åå³è±è½ï¼è±ç£4ï¼ç´«çº¢è²ï¼ç§æ¤ç½ç²æå¤ä¸ªè±ååè±è²ãåºé¨å¸¸å
·æ·±ç´«è²æï¼å®½ååµå½¢æè¿åå½¢ï¼
è±è¯é»è²ï¼éèååµçå½¢ï¼æ±å¤´è¾å°ç¶ãè±ææ3-11æã
è±ç£4ï¼è¿åå½¢æè¿æå½¢ï¼é¿4-7åç±³ï¼å®½3-11åç±³ï¼è¾¹ç¼æµ
æ³¢ç¶æåå¼åè£ï¼ç½è²ãç²çº¢è²ã红è²ãç´«è²ææè²ï¼
è´æçå½¢æé¿åç¶æ¤åå½¢ï¼é¿4-7åç±³ï¼ç´å¾4-5åç±³ï¼æ æ¯ï¼æçæ¶è¤è²ãç§åå¤æ°ï¼é»è²ææ·±ç°è²ï¼è¡¨é¢åèçªç¶ã