| 单词 | reference tube |
| 释义 | > as lemmasreference tube reference tube n. (a) a tube holding a sample to be used as a standard in an experiment, to which samples for testing are compared; (b) a cold-cathode gas-filled tube which can maintain an accurately fixed voltage across itself for long periods. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > operating at ambient temperature reference tube1890 cold-cathode1929 1890 Nature 20 Mar. 471/2 The reduction tube B is then prepared as a reference tube. 1976 Jrnl. Cell Biol. 71 667/1 Tubes were immediately compared with reference tubes standardized with 0.01 M phosphate buffers of known pH. 2006 E. Gülmez et al. in M. Barone et al. Astroparticle, Particle & Space Physics, Detectors & Med. Physics Applic.: Proc. 9th Conf. 338 The same reference tube was used throughout the measurements and the absolute gain of the reference tube was also measured. < as lemmas |
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