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“tracer”的英英意思

单词 tracer 释义 ▪ I. tracer1|tres(r)|[f. trace v.1 + -er1.]One who or that which traces.1. One who follows the footprints or track of anything; one who tracks, investigates, or searches out; spec. one whose business is the tracing of missing persons, p...

“tracer”的意思

单词 tracer 释义 tracer n 1 person or thing that traces 追踪者; 追踪装置; 描摹者; 描摹工具. 2 bullet or shell whose course is made visible by a line of smoke, etc left behind it 曳光弹 [attrib 作定语] tracer bullets 曳光弹. 3 radioactive substance whose...