侧滑-不协调的转弯导致较高的空速和大的下沉率。
SLIP - uncoordinated turn that results in high airspeed and sink rate.
根据实验结果分析了开采停止后覆岩及地表下沉率随时间变化过程。
According to the experiment results, the subsidence ratio of strata and surface varying with time is analyzed.
这个距离在很大程度上依赖于抛备份伞时候的下降速度：较低的下沉率会导致较大的打开距离。
This opening distance largely depends on your sink-rate at time of deployment: a lower sink-rate usually requires a greater opening distance.
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