Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/53dc1ff91621be10fc8998ce68572363.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 ring formation例句_ring formation英汉例句_ring formation双解例句_歐米惠必应词典
Researchers have found the ringed homocentric structures in the section of urinary stone, but the formation mechanism remains unclear. 人們從尿結石的剖麪圖上發現其具有環狀同心層結搆，但其形成原因尚不清楚。