| 单词 | rubber policeman |
| 释义 | > as lemmasrubber policeman 4. Science. More fully rubber policeman. A glass rod or tube with a short piece of rubber tubing or other soft attachment on one end, used in the laboratory for stirring and scraping. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > miscellaneous apparatus bain1477 speculum1650 filtering paper1651 wheel-fire1662 filter paper1670 sun furnace1763 respirator1789 candle-ball1794 rectifier1822 candle-bomb1823 filter1823 oxyhydrogen blowpipe1823 shade1837 graduator1839 pipette1839 thistle funnel1849 pressure tube1852 ozonizer1858 dialyser1861 Liebig condenser1861 Sprengel pump1866 Sprengel tube1866 water softener1867 mercury pump1869 Bunsen burner1870 dialysator1877 test-mixer1877 tube-condenser1877 Kipp1879 reflux condenser1880 policeman1888 converter1889 pressure boiler1891 spot plate1896 hydrogen electrode1898 sampler1902 reactor1903 fume-chamber1905 Permutit1910 microburner1911 salt bridge1915 precipitator1919 Raschig ring1920 microneedle1921 titrator1928 laboratory coatc1936 spray tower1937 precipitron1938 ion exchanger1941 potentiostat1942 chemostat1950 Knudsen pipette1951 pH-stat1956 cryopump1958 1888 A. A. Blair Chem. Anal. Iron 25 A piece of soft rubber tubing on the end of a piece of glass rod or sealed glass tube... This little instrument has acquired the name of ‘policeman’. 1916 P. B. Hawk Pract. Physiol. Chem. (ed. 5) xxvi. 563 The remaining material in the evaporating dish is transferred with the aid of a little hot water and a rubber ‘policeman’ to a second crucible. 1930 W. T. Hall Textbk. Quantitative Anal. xi. 149 This so-called policeman may be made by sticking together the end of a piece of rubber tubing that fits the rod tightly. 1990 Carcinogenesis 11 1266/1 Cells were incubated for various times in complete medium at 37°C before being scraped off the plates with rubber policemen. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。