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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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.

适用材料范围：珠光、拉丝等系列预涂金属板材及各种预涂金属型材，预处理的石材、陶瓷、玻璃、木材等。

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The drawing process for producing the part is completed in one operation, and a hole for machining use is pre-punched to control the magnitude of radial stress.

采用一次拉延成型，并在其底部预冲工艺孔，可控制径向应力的大小。

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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