“top rail”的概念、定义、翻译、参考文献-科学参考

单词	top rail
释义	top rail [`täp ´rāl] ^{BUILDING CONSTRUCTION} The uppermost horizontal member of a unit of framing, such as a door or a sash.
随便看	Orion arm Orionids Orion molecular clouds Orion Nebula Orion spur orlop deck ormer Ormyridae Orneodidae ornithine ornithine cycle Ornithischia ornithology Ornithopoda Ornithorhynchidae ornithosis Ornstein-Uhlenbeck process orocline orocratic orogen orogene orogenesis orogenic belt orogenic cycle orogenic sediment

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