Objective To study injury mechanism and treatment methods of multiple-level spinal fracture.
目的研究多节段脊柱骨折的诊断、治疗及损伤机制。
2
Arranging multiple-factor and multiple-level experiment using uniform design, the cryoprotectors of lactic acid bacteria was studied.
应用拟水平均匀实验设计安排多因素多水平实验，筛选乳酸菌复合冻干保护剂。
3
If you find yourself needing to do this, consider whether a tree control or other element better suited to multiple-level hierarchies would be more appropriate.