In 2008 it was modernized with new buttons, new digital floor indicators with scrolling directional arrows, and a new propulsion drive.

在2008年它被更新，换上新按钮、新的电子楼层显示器连滚动式方向箭咀，以及一台新的驱动装置。

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This company sometimes even installs or replaces a whole lift with individual parts built to order by individual clients, from car fixtures to the propulsion drive.

该公司偶尔甚至会因应个别客户要求，以个别零部件安装或更换一整部升降机，范围由客卡设备至到驱动装置。

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The drive wheels then rotate as necessary, to achieve both balance and propulsion.

然后驱动轮按需转动，同时实现平衡和推进。

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The problem came to light when a Propulsion Drive Electronics (PDE) control unit picked up a difference in pressures between the oxidiser and the fuel going through one of the ATV's four "propulsion chains".

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Conventional hybrids use mainly the gasoline engine for propulsion, drawing on the electric drive and batteries only occasionally to (impressively) improve gasoline efficiency.

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The system is tiny but has a grand name - Warp Drive (Water Alcohol Resisto-jet Propulsion De-orbit Re-entry Velocity Experiment).

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