| 正面 | 10395.neutron 英 ['njuːtrɒn]美 ['nʊtrɑn]     |
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| 背面 |      释义： 1. giggle 这个拟声词双写字母g加-le，就表示这种动作的重复性，没完没了、不停的、持续地重复下去，即：咯咯地笑，咯咯笑个不止。2. giggle---"咯咯"---傻笑n. [核] 中子 例句： 1. A neutron star has a gravitational field strong enough to generate X-rays.中子星上存在强大的重力场，足以产生X射线。 neutron 中子来自neutral,中性的，-on,物理名词后缀，来自eon. neutron (n.)"electrically neuter particle of the atom," 1921, coined by U.S. chemist William D. Harkins (1873-1951) from neutral (adj.) + -on. First record of neutron bomb is from 1960. Neutron star attested from 1934, originally hypothetical; so called because it would be composed of neutrons." |