In general, the control methods of the aircraft 's landing gear shock absorbers are classified three categories: a passive type, an active type, and semi - active type.
一般地说，飞机起落架缓冲系统的控制方式有三种：被动控制、主动控制和半主动控制。
2
On the basis of test count, the complete C-R-S-N curve is worked out according to the principle of statistics. so as to provide basic data for gear design.
在试验数据的基础上，根据统计学原理，拟合出完整的C - R - S - N曲线，并获得各种可靠度下的弯曲疲劳曲线，从而为国产材料齿轮设计提供了必要的基础数据。
3
The ideal additives for industrial gear oil in cold area should be comprised of improver of viscosity index, pour point depressant, S-P extreme pressure wear inhibitor and benzotriazole fatty amine.