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radioactive tracer
anim.husb.	放射性示踪原子
auto.	放射性示踪剂物
desert.	放射性示踪
ecol.	示踪原子
el.	放射性示踪剂【核】
environ.	同位素〔放射性〕示踪物; 放射显迹物
met.	放射性示踪剂; 同位素示踪剂
repr.biol.	放射性标记物
tech.	放射性示踪器; 放射性示踪物放射性示踪剂; 放射性示踪物质
wind.	放射性示踪物
radioactive tracer A radioactive isotope which, when injected into a biological or physical system, can be traced by radiation detection devices, permitting determination of the distribution or location of the substance to which it is attached
environ.	放射性指示剂 (一种放射性同位素，当把它注入到生物或物理系统时，能被辐射检测设备追踪，并能检测到它的分布情况或位置。)
radioactive tracers
agric.	放射性示踪剂

radioactive tracer: 27 phrases in 14 subjects

Desert science	1
Drilling	2
Ecology	1
Electronics	1
Engineering geology	2
Environment	2
Geophysics	5
Metallurgy	1
Oil / petroleum	4
Plastics	1
Polymers	1
Space	1
Technology	4
Textile industry	1