tracer
英 ['treɪsə]
美['tresɚ]
- n. [核] 示踪物；追踪者；描图者；（铁笔等）绘图工具
- n. (Tracer)人名；(英)特雷瑟
英英释意
- 1. an investigator who is employed to find missing persons or missing goods
- 2. an instrument used to make tracings
- 3. (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
- 4. ammunition whose flight can be observed by a trail of smoke