结果四种牙膏均可使QH菌斑指数、出血指数和阿米巴感染度下降（P<0.05），而探诊深度、附着水平和牙松动度无统计学差异（P>0.05）。
Results The four toothpastes reduced the QH, SBI and AID(P<0.05), but there was no significant difference between in AL, PD and OD(P>0.05)among the groups.
采用附带压力传感器的探杆配合操作，可为有关牙动度的医学研究和临床提供较精确的变力下牙齿松动位移测量数据。
Choosing the way in which the handgrip works with pressure sensor can help those who working for measuring tooth mobility displacement or working in clinic to get more accurate data.
对压板松动时大型汽轮发电机定子端部单根绕组的两自由度主共振问题进行了研究。
Two degree of freedom principal resonance of generator end winding is studied when the clamping plates are loose.
开挖引致的松动区减少围岩劲度，将减少衬砌轴向应力，但增加剪应力及挠曲应力。
It will decrease the maximum axial stress of the lining, but it will increase the maximum shear stress and flexural stress.
开挖引致的松动区减少围岩劲度，将减少衬砌轴向应力，但增加剪应力及挠曲应力。
It will decrease the maximum axial stress of the lining, but it will increase the maximum shear stress and flexural stress.
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