The flexible bone composite includes at least one polymeric layer and at least one calcium-containing layer.
该挠性骨复 合材料包括至少一个聚合物层和至少一个含钙层。
The ink ribbon is characterized in that an ink containing layer of the present printing ink ribbon is removed, and only a nylon based ribbon is reserved.
该打印带的特点是去掉现行打印色带的含墨层,仅保留尼龙基带。
The rock in the fault zones in mine roadways are generally fractured and difficult to support. As they often connect with the water containing layer, water inrush is apt to occcur.
矿山巷道中的断层带岩石一般比较破碎 ,难以支护 ,而且常常与含水层导通 ,易发生涌水。
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