| 释义 |
trac·er AHD[trāʹsər] D.J.[ˈtreɪsə]K.K.[ˈtresɚ]n.（名词）- One who is employed to locate missing goods or persons.追踪者：受雇寻查失踪的货物或人员的人
- An investigation or inquiry organized to trace missing goods or persons.追踪调查：为查找失踪物品或人员而组织的调查或询问
- Any of several instruments used in making tracings or in imprinting designs by tracing.描绘工具：用于映描或通过映描进行印压设计的仪器
- A tracer bullet.曳光弹
- Chemistry An identifiable substance, such as a dye or a radioactive isotope, that is introduced into a biological or mechanical system and can be followed through the course of a process, providing information on the pattern of events in the process or on the redistribution of the parts or elements involved. Also called In this sense, also called label 【化学】 示踪剂：一种可用来识别的物质，如一种染剂或放射性同位素，可被引入生物或化学系统内并在某过程的行进方向上被跟踪，提供有关过程中事件类型或涉及到的部分或成分的重新配置的信息 也作 在此意义上也可称作 label
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