The elastic force and structure of the elastic force ring were discussed.

对弹力环结构、弹力进行了设计和研究。

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A research was made on the structure of piston ring and elastic force ring in oilless lubrication compressors.

对全无油压缩机上活塞环弹力环结构进行了研究。

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Metal elastic force ring inside piston rings can add initial elastic force of the non-metallic piston ring to get expectative seal effect.

在活塞环的内侧设置金属的弹力环增加非金属活塞环的预弹力，可到达预期的密封效果。

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What seemed to be something of a threat then - the Royal's already shed half of its investment bank, so force us to ring-fence and see what happens - has turned into more of a prediction.

BBC: Lloyds co-operates, RBS shrinks

In 2009, a tip to the task force broke up a ring that was planning to bomb the subways.

CNN: Terror in N.Y.? Whaddya gonna do

On a lark, Mr. Minsky spent some time "inventing useless things, " he says, such as a "gravity machine, " a device that would ring a bell if the force of gravity changed.

WSJ: Looking for Something Useful to Do With Your Time? Don't Try This