地球磁场不同的变化会造成它们不同的自旋方式，每种方式都会让罗盘的化学状态表现出细微的差异。
Variations in Earth’s magnetic field cause them to spin in different ways, each of which leaves the compass in a slightly different chemical state.
全同粒子是指质量、电荷、自旋等一些固有性质相同的粒子，它们在散射时表现出一些特别的性质。
The identical particles are the particles with inherent identical character in mass, electric charge, spin, etc.
全同粒子是指质量、电荷、自旋等一些固有性质相同的粒子，它们在散射时表现出一些特别的性质。
The identical particles are the particles with inherent identical character in mass, electric charge, spin, etc.
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