永冻层之下的土壤越硬，所需要的药室装药量也越大。
The harder the material under the permafrost is, the larger the chamber charge required .
载药磷酸钙骨水泥是一种集骨修复和局部药物缓释于一体的新型硬组织修复材料。
Calcium phosphate cements (CPC) are used for bone defect filling and may also be used as delivery systems for active agents.
载药磷酸钙骨水泥是一种集骨修复和局部药物缓释于一体的新型硬组织修复材料。
Calcium phosphate cements (CPC) are used for bone defect filling and may also be used as delivery systems for active agents.
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