Carbon dioxide and other attractants are released near the trap, which works a little like a sophisticated vacuum cleaner.

陷阱周围布好了二氧化碳和其它诱饵，陷阱灭蚊的时候与精密复杂的真空吸尘器吸尘有点像。

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Sample temperature curve can be displayed, a separator temperature curve, thetemperature curve of the cold trap, vacuum curve.

可显示样品温度曲线、隔板温度曲线、冷阱温度曲线、真空度曲线。

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Just like the filter in a vacuum cleaner, however, the trap must be cleaned periodically.

FORBES: Clearing the Air