The front and back seat supports use telescopic guides to ensure the seated area is strongly supported.
前面和后面的座位支持使用伸缩指导，以确保座位面积的大力支持。
Before you dig in, make sure you have all your books, notes, study guides and writing utensils in front of you.
开始学习之前，确保所有的书、笔记、学习指南和书写工具摆在桌上。
Current profile extrusion practice typically involves dry calibration tables, which can be 30 ft or more long, in front of a water immersion tank with form guides under low vacuum.
目前，型材挤出实践包括干标定台，它有30多英尺长，位于浸渍水箱的前部，结构导轨处于负压。
Current profile extrusion practice typically involves dry calibration tables, which can be 30 ft or more long, in front of a water immersion tank with form guides under low vacuum.
目前，型材挤出实践包括干标定台，它有30多英尺长，位于浸渍水箱的前部，结构导轨处于负压。
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