This opening distance largely depends on your sink-rate at time of deployment: a lower sink-rate usually requires a greater opening distance.
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。
2
The outlet of the liquid helium heat sink pipeline is provided with a pipeline regulating valve for regulating the flow rate and pressure of the pipeline.