升降系统为线性电机操作，其他动作为气压弹簧和手动操作，是电动和气动双动力的综合外科手术台。
Its elevation system is operated by linearity electric motor. Others adjustment operated by air spring and manual. It is a kind of electric and air spring double-action operating table.
麦凯恩正在拉拢通用汽车，进入通用汽车生产双动力汽车的计划，作为美国智慧可以解决很多问题的明证，从高油价到全球温室问题都是如此。
Mr McCain is touting this, along with GM's plans for a plug-in hybrid car, as evidence that American ingenuity can solve a lot of problems, from high petrol prices to global warming.
双动的动力缸将施加的油压转换成助动力，作用在齿 条上，加强了驾驶员施加的转向力。
The double-acting steering cylinder converts the applied oil pressure into an assisting force which acts on the rack and which intensifies the steering force exerted by the driver.
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