单词	beta brass
释义	beta brass noun : a copper-zinc alloy with a copper content of approximately 50 to 55 percent Word History Etymology beta entry 2
随便看	ironnest irons irons in the fire irons out ironshod ironshot ironside ironsides ironsmith ironsmiths ironstone ironstone china ironstone chinas ironstones irontrees ironware ironwares ironweed ironweeds ironwood ironwood wattle ironwoods ironwork ironworker ironworkers

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