| 单词 | 电池 |
| 释义 | 〔selenium〕A nonmetallic element, red in powder form, black in vitreous form, and metallic gray in crystalline form, resembling sulfur and obtained primarily as a byproduct of electrolytic copper refining. It is widely used in rectifiers, as a semiconductor, and in xerography. Its photovoltaic and photoconductive actions make it useful in photocells, photographic exposure meters, and solar cells. Atomic number 34; atomic weight 78.96; melting point (of gray selenium) 217°C; boiling point (gray) 684.9°C; specific gravity (gray) 4.79; (vitreous) 4.28; valence 2, 4, or 6. See table at element 硒：一种非金属元素，粉末状时呈红色，玻璃状时呈黑色，结晶状时呈金属般的灰色，与硫类似，通常作为副产品在电解法冶炼铜时获得。广泛地用于整流器（如半导体）和静电复印术中。其光电压的和光电导的效应使它可在光电池、照相曝光表和太阳能电池中发挥作用。原子序数34；原子量78.96；（灰色硒的）熔点217°C；沸点（灰色硒的）684.9°C；（灰色硒的）比重4.79；（玻璃状的硒）比重4.28；化合价2,4或6 参见 element〔cathode〕A negatively charged electrode, as of an electrolytic cell, a storage battery, or an electron tube.阴极：负电极，如电池、蓄电池或电子管的负极〔battery〕A single cell, such as a dry cell, that produces an electric current.蓄电池：单独的一个电池，如干电池，能产生电流〔antimony〕A metallic element having four allotropic forms, the most common of which is a hard, extremely brittle, lustrous, silver-white, crystalline material. It is used in a wide variety of alloys, especially with lead in battery plates, and in the manufacture of flame-proofing compounds, paint, semiconductor devices, and ceramic products. Atomic number 51; atomic weight 121.75; melting point 630.5°C; boiling point 1,380°C; specific gravity 6.691; valence 3, 5. See table at element 锑：一种金属元素，有四个同素异形体，最常见的是一种硬而脆的银白色发光晶体物质。锑普遍用于各种合金，特别是和铅一起用于电池极板，制造防火合成物、油漆、半导体装置和陶瓷制品。原子序数为51；原子量为121.75；熔点为630.5°C；沸点1,380°C；比重为6.691；化合价为3,5 参见 element〔carbon〕A carbonaceous electrode in an electric cell.碳（精电）极：电池里的碳质电极〔nickel〕Symbol Ni A silvery, hard, ductile, ferromagnetic metallic element used in alloys, in corrosion-resistant surfaces and batteries, and for electroplating. Atomic number 28; atomic weight 58.71; melting point 1,453°C; boiling point 2,732°C; specific gravity 8.902; valence 0, 1, 2, 3. See table at element 符号 Ni 镍：一种银色的、坚硬有韧性的金属元素，用于合金、耐腐的表面和电池以及电镀。原子序数28；原子量58.71；熔点1,453°C；沸点2,732°C；比重8.902；化合价0，1，2，3 参见 element〔Volta〕Italian physicist who invented the first electric battery (1800). The volt is named in his honor.伏特，亚历山德罗：(1745-1827) 意大利物理学家，发明了第一块电池(1800年）。伏特是为纪念他而命名〔mercury〕Symbol Hg A silvery-white poisonous metallic element, liquid at room temperature and used in thermometers, barometers, vapor lamps, and batteries and in the preparation of chemical pesticides. Atomic number 80; atomic weight 200.59; melting point -38.87°C; boiling point 356.58°C; specific gravity 13.546 (at 20°C); valence 1, 2. Also called quicksilver See table at element 符号 Hg 水银，汞：一种银白色有毒金属元素，室温下呈液态，用于温度计、气压计、蒸气灯及电池中，也用于化学杀虫剂中。原子序数为80；原子量为200.59；熔点-38.87°C；沸点为356.58°C；比重为13.546（20°C时）；化合价为1,2 也作 quicksilver 参见 element〔recharge〕To charge again, especially to reenergize a storage battery.再装载，再充电：再装入物质，尤指给贮能电池再充电〔reversible〕a reversible cell; a reversible reaction.可逆电池；可逆反应〔dead〕a dead battery.电力用完的电池〔tester〕a battery tester; a taste tester.一个电池测试仪；一个测味者〔pole〕Either of two oppositely charged terminals, as in an electric cell or battery.电极：两个带相反电荷的电极中的任一个，如在电池或蓄电池中 |
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