positively charged protons的用法和樣例：
例句
- Elements consist of atoms that consist of a nucleus of positive protons, neutral neutrons, and a shell of electrons.
組成元素的原子是由帶正電的質(zhì)子，中性的中子組成的原子核以及核外電子構成的。 - Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.
粒子是從天然放射性蛻變得到的帶正電的氦核。
