[化学]锕系
锕系，锕系元素
A radioactive transuranic element in the actinide series, artificially produced in trace amounts. Its longest-lived isotope is No255 with a half-life of3 minutes. Atomic number102.
actinium series───锕系
activity series───活度顺序
lanthanide series───镧系元素
acetylene series───乙炔系列
active services───现役
alkane series───烷烃系
alkene series───烯烃系
alkyne series───炔烃系
condenseries───n.炼乳工厂