Results:(1) The flow rate of stimulated whole saliva in youth group was significantly higher than that in middle-aged, aged and macrobian groups(P<0.05).

结果：（1）青龄组刺激性全唾液流速高于中龄组、老龄组、长寿组（P<0.05）；

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Japanese JTEKT faces the automatic transmission system of the car and case of infinitely variable speeds, rolled out axis of macrobian life planet to use needle bearing.

日本JTEKT面向汽车的自动传动系统和无级变速箱，推出了长寿命行星轴用滚针轴承。

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