radioactive tracer放射性: radioactivity; activity; emi ...示踪: spike原: primary; original; former素: white放射性示踪: r-tracing; radioactive tracer; radioactive tracing; radioactivetracer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:放射性示踪原素，即可在微信中查询翻译
