Using of pre-drawing, extruding holes and shot peening techniques has shown obvious effect in extending the fatigue life of motorcycle chain.

用预拉、挤孔、喷丸等强化工艺来提高摩托车链条的疲劳寿命效果很明显；

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Drawing frames of video at various positions in time that are potentially overlapping requires special consideration in the pre-rendering steps.

视频的多个时间帧有潜在的重叠，因此在呈现前的步骤中需要特别注意。

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The pre-processor consists of drawing and showing model, inputting parameters and applying constraints.

前处理包括模型绘制、参数输入和约束施加；

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"The majority of senators believe the time is now to start drawing down U.S. forces, not just to pre-surge levels but beyond them, and to limit the mission of those remaining to fight al Qaeda, train Iraqis and help protect the borders, " he said.

CNN: 2008 politics woven through Iraq hearings