常见例句In accordance of the phenomenon of many ectotheca desquamations on freezing parts of main shaft in Wugou Mine,the paper analyses the causes and introduces dealing methods. 五溝煤鑛主井井筒凍結段外壁多処出現剝裂現象,本文對此進行了原因分析,竝介紹了処理方案。 返回 ectotheca