Particle Physics. Designating a quark distinguished by a characteristic flavour (flavour, n. 5) and having a relatively small mass and an electric…
| 单词 | θ79189 | 
| 释义 | the world > matter > physics > atomic physics > particle physics > quark > 			[adjective]		 > down (1)		 down1972 Particle Physics. Designating a quark distinguished by a characteristic flavour (flavour, n. 5) and having a relatively small mass and an electric… | 
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