the main constiituents of clean dry air
2007-09-30 8:14 pm
the main constiituents of clean dry air,giving their respective percentages by volume.THX
回答 (2)
2007-09-30 10:03 pm
✔ 最佳答案
nitrogen 78%oxygen 21 %
carbon dioxide 0.04%
other 1%
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