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取一个较大的塑料袋,袋口紧扎在一个带短导管的橡皮塞上,先鼓入约半袋空气,再鼓入氢气至满,然后把盛有混和气的塑料
Take a larger plastic bag, the pocket tight in a rubber tube with a short tube plug, first drum about half a bag of air, and then bubbling hydrogen to full, and then filled with mixed plastic