The deleterious ingredients in gas emission of sculpturing organic glass were studied,using gas chromatography-mass spectrometry coupled with 3-step preconcentrator.
研究了3阶段预浓缩气相-法检有机玻刻过程中排放的有害气体的组成。
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Then over the bald, featureless, fire-blackened mountains, glaciers began to crawl, covering them from the summits to the sea with a mantle of ice; and then with infinite deliberation the work went on of sculpturing the range anew.
然后,在光秃秃、毫无特色、被火烧黑脉上,冰川开始爬行,从顶到大海覆盖着一层冰。然后经过无限深思熟虑,重新雕刻该系列工继续进行。