谢谢ï¼å¦ææç §è²ç¯è¯»ä¹¦æ¹æ³çè¯ï¼ç¬¬ä¸ä¸ªéè²ç¯æ²¡ææä¹åï¼è¿æå°±æ¯ä½ æ¯æä¹ç¡®å®ä»åªä¸è¾¹å¼å§è¯»æ°çï¼
追çå 为ä¸è¬æ²¡æ第äºç¯å°±æ¯éè²ççµé»ï¼èä¸åè¿æ¥è¯»æ°ä¸éï¼è¿ç§çµé»å¯ä»¥æåç¯çµé»æ¥çï¼ç¶åæåä¸ç¯é»è²æ¯è¡¨ç¤ºæ¸©åº¦ç³»æ°200ppmã