当所述脚踏开关在第一位置时，所述作业工具控制器和地面驱动控制器不受影响。
When the foot pedal is in a first position, the work tool control and ground drive control are not affected.
所述脚踏开关允许操作员有选择地保持所述地面驱动控制器和作业工具控制器之一或两者的位置。
The foot pedal allows an operator to selectively hold the position of one or both of the ground drive control and work tool control.
当所述脚踏开关在第二位置时，所述作业工具控制器的位置被保持而所述地面驱动控制器不受影响。
When the foot pedal is in a second position, the position of the work tool control is maintained, while the ground drive control is not affected.
当所述脚踏开关在第三位置时，所述作业工具控制器的位置被保持并且 所述地面驱动控制器的位置被保持。
When the foot pedal is in a third position, the position of the work tool control is maintained and the position of the ground drive control is maintained.
现代无人直升机飞行控制系统一般由飞行控制计算机、伺服驱动机构、传感器、地面监测控制等分系统组成。
The modern unmanned helicopter flight control system is generally composed of the flight control computer, the servo driving mechanism, the sensor, and the ground monitor control system etc.
所述控制系统允许操作员有选择地保持对地面驱动器、作业工具或者地面驱动器和作业工具两者的控制。
The control system allows an operator to selectively maintain control of a ground drive, a work tool, or both the ground drive and the work tool.
理想的一般混凝土，人行道及道路拆迁，再加上地面控制棒驱动和地下室防水。
Ideal for general concrete, sidewalk and road demolition, plus ground-rod driving and basement waterproofing.
理想的一般混凝土，人行道及道路拆迁，再加上地面控制棒驱动和地下室防水。
Ideal for general concrete, sidewalk and road demolition, plus ground-rod driving and basement waterproofing.
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