这一发展只有在引入电动发动机和升降机之后才可能实现。
This development was only possible with the introduction of electric-powered engines and lifts.
车载式轮椅自动升降机在动力的选择方面，可以采用液压传动、气压传动、电动推杆和电机等方式。
On the choice of power, the vehicle mounted wheelchair can use hydraulic drive, pneumatic drive, electric push rod and electric motor.
以电动葫芦为动力装置的简易升降机造价低廉，使用方便，但缺少明确的设计安装标准。
Simple elevator with electric hoist as power unit features low cost and ease of operation.
紧凑型RT剪式升降机采用更加常规的液压传动系统，其单独的车轮电动机在机器相反角落处采用双回路装置传动。
The compact RT scissors use a more conventional hydrostatic drive system, with individual wheel motors plumbed into two circuits uniting drive flow on opposite corners of the machine.
紧凑型RT剪式升降机采用更加常规的液压传动系统，其单独的车轮电动机在机器相反角落处采用双回路装置传动。
The compact RT scissors use a more conventional hydrostatic drive system, with individual wheel motors plumbed into two circuits uniting drive flow on opposite corners of the machine.
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