radiotracer放射: radiate; emit; blas; radiati ...指示剂: indicator; tracer agent放射性: radioactivity; activity; emi ...示: show; indicate; signify; ins ...迹: mark; trace下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:放射指示剂;放射性示迹物,即可在微信中查询翻译