原子质量数大于1的氢的同位素；氘或氚。

An isotope of hydrogen with mass number greater than 1; deuterium or tritium.

锕铀铀的同位素，原子质量数为235，与慢。

The isotope of uranium with mass number235, fissionable with slow neutrons.

研究结果表明，对力对奇质量数核的作用可以用准粒子激发表示。

The results show that the effect of pairing is expressed in terms of one quasi particle excitation for the odd nuclidic mass nucleus.

玻色子包括介子、偶质量数的原子核以及体现量子场论中的场所需要的粒子。

Bosons include mesons, nuclei of even mass number, and the particles required to embody the fields of quantum field theory.

注意：对于PFTBA特定的质量数，有目标相对丰度。系统调谐结果尽可能靠近表4所列丰度要求。

NOTE: There are target relative abundances for certain PFTBA masses. The system will come as close as possible to the values shown in Table 4.