èæ¢æ»å称缺è¡æ§èåä¸ï¼æ¯æå±é¨èç»ç»å è¡æ¶²å¾ªç¯éç¢ï¼ç¼ºè¡ã缺氧èåçç软ååæ»ã
ãç å ã
1ã主è¦æ¯ç±äºä¾åºèé¨è¡æ¶²çå¨èåºç°ç²¥æ ·ç¡¬ååè¡æ å½¢æï¼ä½¿ç®¡è ççªçè³éå¡ï¼å¯¼è´å±ç¶æ§æ¥æ§èä¾è¡ä¸è¶³èåç ï¼
2ãå¼å¸¸ç©ä½ï¼åºä½ã液ä½ãæ°ä½ï¼æ²¿è¡æ¶²å¾ªç¯è¿å ¥èå¨èæä¾åºèè¡æ¶²å¾ªç¯çé¢é¨å¨èï¼é æè¡æµé»ææè¡æµé骤åè产çç¸åºæ¯é åºåèç»ç»è½¯ååæ»è ã
ï¼1ï¼é»æè 称为å¨è硬åæ§è¡æ å½¢ææ§èæ¢æ»ï¼å æ¬ç ç40%ï½60%ï¼
ï¼2ï¼è¡æµåéè 称为èæ å¡å æ¬ç ç15%ï½20%ã
3ãè¿æä¸ç§è éæ§èæ¢æ»ï¼æ¯é«è¡åå°å¨è硬åå¼èµ·çèé¨å¨è深穿æ¯éå¡å½¢æçå¾®æ¢æ»ï¼4ãå°æ°ç ä¾å¯ç±å¨èç²¥æ ·ç¡¬åæåè±è½å´©è§£å¯¼è´çå¾®æ å¡å¼èµ·ï¼å èæ¢æ»ç20%ï½30%ã
ã解æãèæ¢æ»æ¯èè¡ç®¡ç ä¸æ常è§è ï¼çº¦å 75%ï¼ç æ»çå¹³å10%ï½15%ï¼è´æ®çæé«ï¼ä¸ææå¤åï¼å¤åæ§ä¸é£çæ»äº¡çå¤§å¹ åº¦å¢å ã