释义 |
strontium 90n.(名词)- The strontium isotope with mass 90, having a half-life of 28 years, used for its high-energy beta emission in certain nuclear electric power sources and constituting a radiation hazard in fallout.锶90:锶的质量为90的同位素,半衰期为28年,在某种核电能源使用它的高能β放射性辐射体,它的放射性坠尘形成辐射危险
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