The platform was under the control of an Israeli Air Force ground controller, who is believed to have lost contact with the UAV after which it lost altitude and hit a high-tensioncable.
平台是在以色列空军地面控制器的控制之下，据信已经与无人机失去联系后，它失去高度撞上一个高压线。
2
The deep well coal road cable of small diameter hole and high pre-tension structure and craft were studied according to the condition of high stress and composite roof in Fengcheng coal field.