| 单词 | x-ray tube |
| 释义 | > as lemmasX-ray tube X-ray tube n. Physics an electron tube for generating X-rays, in which the electrons are accelerated to high energies and made to strike a metal target from which the X-rays are emitted. ΘΚΠ the world > matter > physics > atomic nucleus > radioactivity > X-rays > [noun] > electron tube X-ray tube1896 Coolidge tube1913 1896 Brit. Med. Jrnl. 29 Aug. 513/2 A Complete Set of Apparatus for producing the new x rays, consisting of five cell battery, an induction coil giving a three-inch spark, one of the new x ray tubes and stand. 1938 E. G. Richardson Physical Sci. Mod. Life ix. 177 Radiography—as practised in medicine and industry—became possible only with the introduction of the focusing X-ray tube. 1974 Encycl. Brit. Macropædia XIV. 345/1 Small gamma-ray sources are placed in areas inaccessible to X-ray tubes such as inside pipelines. 2003 Pop. Sci. Dec. 68/1 His breakthrough was to place a slotted tungsten plate over the X-ray tubes to prevent photon ‘scatter’. < as lemmas |
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