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关东
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关东guāndōng(1)[northeast China]旧称东北三省,以位于山海关之东而得名。亦称“关外”(2)[the east of Hangu pass in ancient china]指函谷关以东之地自秦孝公以来,周室卑微,诸侯相兼,关东为六国。――《史记·李斯列传》
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bromine agents
bromine cyan
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bromine fluoride
bromine hydrate
bromine hydride
bromine index
bromine in ring
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bromine iodide
bromine (mono)chloride
bromine monochloride
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bromine still
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bromine trifluoride
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bromine water
brominism
brominized
bromiodide
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更新时间:2025/11/14 14:07:17