??CCl4?C2Cl4
???,???C2-Cl4165.83?1.6311(15/4)?-22.4121?5.83?2.11kPa (15.8mmHg22)?10000?; ????????????(??)???^?,?????,??????,700?????????????
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????????70?????????????????????25PPM50PPM?????27PPM?????????????????????????????
??CCl4????????????????????????????????????????????????????????????????.
1.??????????????(20)1.595/???22.87677
2.????5??????????????????????
3.?????????^24??
4....
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