| 单词 | boric oxide | 
| 释义 | boric oxide [¦bȯr·ik `äk´sīd]  INORGANIC CHEMISTRY B2O3 A trioxide of boron obtained as rhombic crystals melting at 460°C; used as an intermediate in the production of boron halides and metallic borides and as a thermal neutron absorber in nuclear engineering. Also known as boron oxide.  | 
	
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