Alloy steel gear, hard tooth surface, large in output torque and durable in use.
齿轮材料为合金钢，硬齿面，输出转矩大，可靠耐用。
Objective To investigate the influence of surface potentials of tooth hard tissue on bone remodeling.
目的研究牙体硬组织表面电位与骨生长改建的关系。
Objective To investigate the influence of surface potentials of tooth hard tissue on bone remodeling.
目的研究牙体硬组织表面电位与骨生长改建的关系。
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