| 单词 | ozone test paper |
| 释义 | > as lemmasozone test paper ΘΚΠ the world > matter > chemistry > chemical tests > indicators > [noun] > test papers litmus paper1803 turmeric paper1806 test-paper1827 georgina paper1843 ozone paper1861 ozone test paper1872 turmeric test-paper1880 lead-paper1890 tetra-paper1890 1872 Rep. Brit. Assoc. Advancem. Sci. 1871 ii. 76 The author stated that the ozone test-papers did not become permanently coloured in the neighbourhood of cesspools. 1889 Science 7 June 440/2 The author made some experiments with the ordinary ozone test papers... The papers did not always give the same results when two or more were exposed under precisely the same conditions. < as lemmas |
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