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The pistons are graphite-coated to reduce friction.是什么意思？

The pistons are graphite-coated to reduce friction.

活塞上涂了一层石墨以减小摩擦力。

相关词汇
the pistons are to reduce friction

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

pistons

n. <机>活塞( piston的名词复数 )；
例句
The pistons are graphite-coated to reduce friction.
活塞上涂了一层石墨以减小摩擦力。

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；
例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；
例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

reduce

vt. 减少，缩小，使还原，使变弱；vi. 减少，节食，蒸发，（液体）浓缩变稠；
例句
He urged the administration and Congress to come up with a credible package to reduce the budget deficit.
他敦促政府和国会出台一整套切实可行的方案，以缩减预算赤字。

friction

n. 摩擦，冲突，不和，摩擦力；
例句
Sara sensed that there had been friction between her children...
萨拉感觉到她的孩子之间有过争执。
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He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
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使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
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我们的指纹可能到处都是。
Move to a reclining position on the mattress and rest for 15 minutes.
靠在垫子上休息15分钟。
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使社区持续受益的项目
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他从没有想象过自己整个职业生涯都要从事那个工作。
...a walk along the ramparts of the Old City.
沿着老城的城墙漫步
They have been directed to give special attention to the problem of poverty...
他们得到指示要特别关注贫困问题。
It was a bank that started out with grand ideas and lofty ideals...
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The water is advancing at a rate of 5cm a day...
水位正以每天5厘米的速度上升。
During the riots hundreds of people seized the opportunity to steal property...
在暴乱中成百上千的人纷纷趁机偷窃财物。
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这一习俗的起源鲜为人知。