| 单词 | carrier-free |
| 释义 | > as lemmascarrier-free carrier-free adj. (of a radioactive isotope or its application) not requiring or involving the use of a carrier (cf. sense 14b(a)). ΚΠ 1944 Amer. Jrnl. Physiol. 140 671 It was decided to use a carrier since the uptake of carrier-free iodine by the thyroid varies with the level of inorganic iodine in the blood at the time of injection. 1953 A. F. Rupp in J. R. Bradford Radioisotopes ix. 183 Carrier-free separation of radioisotopes by adsorption of radiocolloids. 2020 Carbohydrate Polymers 250 3/1 The positron source was prepared by evaporating carrier-free 22NaCl (in aqueous solution). < as lemmas |
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