| 单词 | radioactive substance |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔encase〕The original plan was to encase a small amount of a radioactive substance in a protective steel container.原先计划是要将少量的放射性物质封存在一个钢质防护罩中。柯林斯高阶〔encase〕The original plan was to encase a small amount of a radioactive substance in a protective steel container.最初的计划是要将少量的放射性物质封存在一个防护钢罐里。外研社新世纪〔exercise〕Always exercise caution when handling radioactive substances.处理放射性物质时要时刻小心谨慎。剑桥高阶〔ingest〕Twelve workers have ingested radioactive substances well above the permitted maximum.12名工人摄入体内的放射性物质已大大超过允许的最高限度。英汉大词典〔opine〕Ernest Rutherford opined that his work on radioactive substances would be of little or no practical use.欧内斯特‧卢瑟福认为，他对放射性物质的研究工作没有多少或者没有实际用处。剑桥高阶〔planchet〕A small shallow metal container in which a radioactive substance is deposited for measurement of its activity.样品皿：用于存放放射性物质以测量其活性的小而浅的金属容器美国传统〔radiation〕A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.核衰变产生的微粒或电磁波：放射物的原子或分子由于核衰变放出的一束微粒或电磁波美国传统〔radioactive decay〕Spontaneous disintegration of a radioactive substance accompanied by emission of ionizing radiation in the form of particles and gamma rays.放射性衰变：放射性物质的自发的分裂，伴随有放出微粒或r射线形式的电离辐射美国传统〔radioactivity〕The radiation, including alpha particles, nucleons, electrons, and gamma rays, emitted by a radioactive substance.辐射：由一种放射性物质发出的辐射，包括α粒子、原子核、电子、和γ射线美国传统〔radiology〕The branch of medicine that deals with the use of radioactive substances in diagnosis and treatment of disease.医疗辐射学：医学的一个分支，从事用放射性物质进行疾病诊断和治疗美国传统〔substance〕Some workers had developed cancer after exposure to radioactive substances.有些工人接触放射性物质后得了癌症。麦克米伦高阶Always exercise caution when handling radioactive substances.处理放射物时，总是要谨慎。剑桥国际Ernest Rutherford opined that his work on radioactive substances would be of little or no practical use.欧内斯特·拉瑟福德认为，他针对放射性物质所做的工作没有多少用处或者说没有实际用处。剑桥国际 |
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