1.The roof abscission layer is the biggest security risk in bolting support tunnel. 顶板离层是锚杆支护巷道最大的安全隐患之一。
2.Epithelial cells necrosis and abscission in the lamellae, there are bacterials. 1 - capillary vessel, 2 , 3 - bacterials. 鳃小片上皮细胞发生坏死脱落，毛细血管裸露，其上粘附有细长的细菌. 1- 毛细血管, 2、3-细菌。 |
