在上面一支大口径管，会把呼出的气体收集到塑料袋中用来分析。
It holds a wide tube that will route my exhalations into plastic bags for analysis.
套管柱顶部的一根大口径管，形如漏斗，以引导钻井工具进入到井眼的顶部。
An enlarged pipe at the top of a casing string that serves as a funnel to guide drilling tools into the top of a well.
用于制作各类合金结构件及其零部件，如电站锅炉过热器集箱、大口径管板结构件。
For the production of various types of alloy structural parts and components, such as the power station boiler superheated header, large diameter tube plate Structure.
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