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。
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。
Therefore, the roll surface is extremely hard and brittle and it is thermally unstable.
因此，辊子表面有极高的硬度、脆性及热不稳定性。
Surface condition: The surface is relatively hard with sand and small rocks.
路面状况：路面地基较硬，多沙石。
Applied on all resilient floor and hard surface which need to wax.
所有需要打蜡的弹性或硬质地面。
It made it more slippery with the sand on top of the hard surface.
由于赛道表面有很多沙子，显得比较滑。
The hard surface is one key factor of urban heat effect.
硬化路面是城市热环境效应影响因素中较为重要的一个因素。
Mark left by pressing an object hard into a surface.
将一物压在另一物上留下的印记。
Mark left by pressing an object hard into a surface.
将一物压在另一物上留下的印记。
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