| 释义 |
radioisotope|reɪdɪəʊˈaɪsətəʊp|
Also with hyphen.
[f. radio- 3 + isotope.]
A radioactive isotope.
1946Chem. & Engin. News 10 Dec. 3168/1 The availability of radioisotopes of nearly all elements in quantities hitherto unachievable. 1950Times 8 May 4/4 Also being shown are the machines and methods used for the extraction and synthesis of C-14, a radio-isotope of carbon, which has many uses in industrial, medical, and biological research work. 1958Economist 8 Feb. 496/2 Radio-isotope departments are being set up in the Royal Hospital in Baghdad and the University of Shiraz for the diagnosis and treatment of disease. 1976Daily Colonist (Victoria, B.C.) 15 Apr. 5/5 A freshly fallen meteorite..contains radioisotopes which decay in a matter of days or weeks. 1980Brit. Med. Jrnl. 29 Mar. 931/1 The clinical use of radioisotopes has developed over the last 30 years from a technical science into a recognisable clinical specialty.
Hence ˌradioisoˈtopic a., -isoˈtopically adv.
1956Nature 7 Apr. 639/1 The kinetics of biological systems as studied by radioisotopic methods. 1970Ibid. 13 June 1025/1 Detection of regulatory proteins present in such small amounts would probably require radioisotopically labelled proteins of very high specific activity. Ibid. 24 Oct. 383/1 Radioisotopic tracer experiments have established that carbonate from seawater is incorporated into the skeleton by many corals. 1978Ibid. 19 Oct. 667/2 We used a radioisotopically labelled complementary DNA probe..generated from an in vitro reverse transcriptase reaction. |