From the demand Angle, the increasing of economy has a low effect to employment, and the flexibility of increasing employment always keeps a decline trend in the few years.
从需求方面来看，经济增长对就业的拉动作用逐渐减弱，近几年就业增长弹性一直处于下降趋势。
In this paper the error models of Angle, range and speed due to multipath effect in low Angle radar tracking are given.
给出了在雷达低仰角跟踪测量中由于多径效应影响而引起的雷达仰角、方位角、速度、距离误差的估算模型。
It is found that the variation of planforms and geometrical parameters can effect only the drag reduction but little to the low lift in low angle of attack condition.
发现单纯改变涡襟翼的形式和参数能提高减阻效果，但不能改变小迎角下升力过小的现象。
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