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- A proton or a neutron, especially as part of an atomic nucleus. 核子质子或中心，尤指作为原子核的一个组成部分
- Proton and neutron form a charge doublet. 质子和中子构成电荷双重态。
- We think of a nucleus as made up of neutron and proton. 我们认为原子核是由中子和质子构成的。
- The nucleus of an atom consists of neutrons protons and other particles. 原子核由中子、质子和其他粒子构成。
- We think of a nucleus as make up of neutron and proton. 我们认为原子核是由中子和质子构成的。
- We think of a nucleus as made up of neutron and proton . 我们认为原子核是由中子和质子构成的。
- A proton or a neutron has about the same mass as a hydrogen atom. 质子或中子的质量和氢原子的质量大致相同。
- Clouds cause the diffusion of light from the sun. 云使阳光漫射。
- Neutron has a mass slightly larger than that of proton. 中子的质量略。
- Neutron is neutral and slightly heavier than the proton. 中子是中性的，比质子略重。
- The weight of a neutron is about the same as a proton. 中子的重量和质子的重量差不多相等。
- proton diffusion 质子传递
- An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2.014. 氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2。014
- neutron proton collision 中子质子碰撞
- neutron proton ratio 中子数与质子数比率
- Insulation used to prevent heat diffusion, as from a steam pipe. 绝热材料用来防止热量散失的绝热材料，如从蒸汽输送管上
- Version B: Proton is positive, election negative and neutron neither. 例7.;质子带阳电，电子带阴电，而中子既不带阳电也不带阴电。
- Traditional systems have used oil diffusion pumps. 常规的系统使用油扩散泵。
- The diffusion process seems to be accelerating. 传播过程看来正在加速。
- Diphenylmethane would have a two proton peak. 二苯甲烷必定有一个二质子的峰。
