The first helps you control your vertical velocity to limit the risks of ear barotrauma and DCI.
The first helps you control your vertical velocity to limit the risks of ear barotrauma and DCI.
上升/下降绳可以帮助你控制垂直方向的速度并以此来降低耳朵的气压性创伤和减压病症的危险。
The first helps you control your vertical velocity to limit the risks of ear barotrauma and DCI.
上升/下降绳可以帮助你控制垂直方向的速度并以此来降低耳朵的气压性创伤和减压病症的危险。