alpha radioactivity
常见例句
- This is because the radioactivity emanating from polonium-210 is in the form of highly energetic alpha particles.
这是因为钋—210的放射性是以高能阿尔法粒子的形式存在的。 - Type of radioactive disintegration (see radioactivity) in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle.
放射性蜕变的一类，某些不稳定原子核自发射出一个α粒子以耗散过剩能量。 返回 alpha radioactivity