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；
2
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。
3
Range of applicable materials: pearl, drawing and other pre-coated metal plates and a variety of pre-coated metal sheet profiles, pretreatment of stone, ceramic glass, wood and so on.