| 单词 | 导热 |
| 释义 | 〔aluminum〕A silvery-white, ductile metallic element, the most abundant in the earth's crust but found only in combination, chiefly in bauxite. Having good conductive and thermal properties, it is used to form many hard, light, corrosion-resistant alloys. Atomic number 13; atomic weight 26.98; melting point 660.2°C; boiling point 2,467°C; specific gravity 2.69; valence 3. See table at element 铝：一种银白色韧性金属元素，在地壳中含量最多，但只出现在混合物主要是铝土矿中。由于有良好的导电导热特性而被用来制造多种硬而轻的抗蚀合金。原子序数13；原子量26.98；熔点660.2°C；沸点2,467°C；比重2.69；化合价3 参见 element〔silver〕Symbol Ag A lustrous white, ductile, malleable metallic element, occurring both uncombined and in ores such as argentite, having the highest thermal and electrical conductivity of the metals. It is highly valued for jewelry, tableware, and other ornamental use and is widely used in coinage, photography, dental and soldering alloys, electrical contacts, and printed circuits. Atomic number 47; atomic weight 107.868; melting point 960.8°C; boiling point 2,212°C; specific gravity 10.50; valence 1, 2. See table at element 符号 Ag 银：一种白色有光泽、韧性的可延展的金属元素，单独或结合在铁矿石如银辉石中，在金属中导热和导电性能最好。用它作珠宝，银器和其它装饰品时价格很高，还广泛用于铸币、照相、镶牙用和焊接用的合金、电接触器和印刷电路。原子序数47；原子量107.868；熔点960.8°C；沸点2,212°C；比重10.50；原子价1或2 参见 element〔warm〕Preserving or imparting heat:保温的或导热的：〔lithium〕A soft, silvery, highly reactive metallic element that is used as a heat transfer medium, in thermonuclear weapons, and in various alloys, ceramics, and optical forms of glass. Atomic number 3; atomic weight 6.939; melting point 179°C; boiling point 1,317°C; specific gravity 0.534; valence 1. See table at element 锂：一种柔软、银色、极易反应的金属元素，作为导热体用于热核子武器、及各种合金，陶器，和玻璃的光学构造。原子序数3；原子量6.939；熔点179°C；沸点1,317°C；比重0.534；化合价1 参见 element |
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