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| English | Chinese |
| uranium X₁ | 铀 X₁ (UX₁, 钍的同位素,TH²³⁴) |
| X ray A penetrating electromagnetic radiation, usually generated by accelerating electrons to high velocity and suddenly stopping them by collision with a solid body, or by inner-shell transitions of atoms with atomic number greater than 10; their wavelength ranges from about 10(-5) angstrom to 10 angstroms, the average wavelength used in research being 1 angstrom | X射线 (一种可穿透的电磁辐射，通常由电子加速到很高的速度并突然与一个固体产生碰撞而产生，或通过原子数大于10的原子内壳层跃迁而产生，其波长范围从大约10(-5)埃到10^3埃，经研究平均波长为1埃。) |