- nonradioactive tracer
- 非放射性指示剂
English-Chinese chemistry dictionary (英汉化学大词典). 2013.
English-Chinese chemistry dictionary (英汉化学大词典). 2013.
Isotopes of caesium — Caesium (Cs) has 40 known isotopes. The atomic masses of these isotopes range from 112 to 151. Only one isotope, 133Cs, is stable. The longest lived radioisotopes are 135Cs with a half life of 2.3 million years, 137Cs with a half life of 30.1671… … Wikipedia
carrier — 1. A person or animal that harbors a specific infectious agent in the absence of discernible clinical disease and serves as a potential source of infection. 2. Any chemical capable of accepting an atom … Medical dictionary
dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or … Universalium
Deuterium — Hydrogen 2 Full table General Name, symbol deuterium, 2H or D Neutrons 1 … Wikipedia
Nuclear chemistry — is the subfield of chemistry dealing with radioactivity, nuclear processes and nuclear properties. It is the chemistry of radioactive elements such as the actinides, radium and radon together with the chemistry associated with equipment (such as… … Wikipedia
zoology — /zoh ol euh jee/, n., pl. zoologies. 1. the science or branch of biology dealing with animals. 2. a treatise on zoology. 3. the animal life of a particular region. [1660 70; ZOO + LOGY] * * * Branch of biology concerned with members of the animal … Universalium