| 单词 | 硼砂 |
| 释义 | 〔colemanite〕A natural white or colorless hydrated calcium borate, Ca2B 6O 11·5H 2O, a principal source of borax. 硬硼钙石，硼炭石：一种天然的白色或无色脱水硼酸钙，Ca2B 6O 11·5H 2O，硼砂的主要来源 〔boracic〕From Medieval Latin borāx borāc- [borax] * see borax 1源自 中世纪拉丁语 borāx borāc- [硼砂的] * 参见 borax1〔borax〕A hydrated sodium borate, Na2B 4O 7·10H 2O, an ore of boron, that is used as a cleaning compound. 硼砂：水合硼钠化合物，Na2B 4O 7·10H 2O，是一种硼矿，用作清洁性化合物 〔boron〕A soft, brown, amorphous or crystalline nonmetallic element, extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys. Atomic number 5; atomic weight 10.811; melting point 2,300°C; sublimation point 2,550°C; specific gravity (crystal) 2.34; valence 3. See table at element 硼：一种柔软、棕色、无定形或结晶的非金属元素，主要从四水硼砂和硼砂中提取，用于闪光剂、推进混合物、原子反应控制剂、磨砂和硬合金中。原子序数5；原子量10.811；熔点2,300°C；沸点2,550°C；比重（晶体）2.34；化合价3 参见 element〔borax〕[Perhaps from the custom of giving away borax soap as a premium for the sale of cheap furniture] [可能源于一种风俗，即在出售廉价家具时搭上硼砂肥皂作为一种添头] |
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