- 推荐网络例句
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She took her feet off the pedals and coasted downhill.
她把脚从自行车的踏板上松开，沿山坡滑行而下。
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This article describes briefly process procedure and characters of 5 sets rolling tack welders for longitudinal submerged arc welding pipe unit,and introduces common defects during tack welding operation,such as air pocket,slag,arc burn,offset and misalignment etc.
简述了直缝埋弧焊管机组中五组压辊式预焊机的工艺过程及特点，介绍了预焊作业中常见的气孔、夹渣、烧穿、错边、焊偏等缺陷。
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The simulation results demonstrate that the straight slope formal attack angle change rule has better time adjustability in corner section and higher turning efficiency than the exponential attack angle change rule, which provides a theory reference to the study of relevant field.
结果表明，直线斜率形式的迎角变化规律相对于指数形式的迎角变化规律具有转弯段时间可调性强、转弯效率高的优点，该项研究为相关领域研究提供了理论参考。
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