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单词 安全设施
释义 〔security〕Something that gives or assures safety, as:安全设施:给予或保证安全的设施,如:〔airside〕airside operations; airside security devices.机场操作;机场安全设施〔bismuth〕A white, crystalline, brittle, highly diamagnetic metallic element used in alloys to form sharp castings for objects sensitive to high temperatures and in various low-melting alloys for fire-safety devices. Atomic number 83; atomic weight 208.980; melting point 271.3°C; boiling point 1,560°C; specific gravity 9.747; valence 3, 5. See table at element 铋:白色、晶状、易碎、高度抗磁的金属元素,用于高温敏感物体的合金中,以铸成锋利物件,多种用于防火安全设施的低熔点合金。原子序数83;原子量208.980;熔点271.3°C;沸点1560°C;比重9.747;化合价3,5 参见 element〔safety〕A device designed to prevent accidents, as a lock on a firearm preventing accidental firing.安全设施:为防止意外而设计的装置,如为避免走火而在火器上装的保险栓
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