| 单词 | 主要存在 |
| 释义 | 〔ferritin〕An iron-containing protein complex, found principally in the intestinal mucosa, spleen, and liver, that functions as the primary form of iron storage in the body.铁蛋白：一种主要存在于脾、肝和肠分泌的粘液中的含铁的蛋白复合物，它是身体内储存铁的主要形式〔indium〕A soft, malleable, silvery-white metallic element found primarily in ores of zinc and tin, used as a plating over silver in making mirrors, in plating aircraft bearings, and in compounds for making transistors. Atomic number 49; atomic weight 114.82; melting point 156.61°C; boiling point 2,000°C; specific gravity 7.31; valence 1, 2, 3. See table at element 铟：一种较软、可塑性强的银白色金属物质，主要存在于锌矿床和锡矿床中，制造镜子时镀在水银上，也可镀于飞行器表面，其合金可以做晶体管。原子序数为49；原子量114.82；熔点是156.61°C；沸点为2,000°C；比重7.31；原子价为1,2,3 参见 element〔endorphin〕Any of a group of peptide hormones that bind to opiate receptors and are found mainly in the brain. Endorphins reduce the sensation of pain and affect emotions.多肽，内啡肽：指将麻醉传感器联结在一起的任一肽激素群，主要存在大脑中，内啡肽可缓解痛感并影响情绪〔cerium〕A lustrous, iron-gray, malleable metallic rare-earth element that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, is a constituent of lighter flint alloys, and is used in various metallurgical and nuclear applications. Atomic number 58; atomic weight 140.12; melting point 795°C; boiling point 3,468°C; specific gravity 6.67 to 8.23; valence 3, 4. See table at element 铈：一种有光泽、铁灰色、可延展的金属稀土元素，主要存在于独居石和氟碳铈矿中，以四种同素异形体存在，是轻燧石合金的成分，在冶金和核能工业上有多种应用。原子序数58；原子量140.12；熔点795°C；沸点3,468°C；比重6.67至8.23；化合价3,4 参见 element〔menhir〕A prehistoric monument of a class found chiefly in the British Isles and northern France, consisting of a single tall, upright megalith.竖石纪念物：一种史前遗留下来的纪念碑，主要存在于不列颠群岛及法国北部，由单块高而直的巨石构成〔Amish〕An orthodox Anabaptist sect that separated from the Mennonites in the late 17th century and exists today primarily in southeast Pennsylvania.安曼教派：17世纪晚期从门诺教派脱离出来的一个再洗礼派正统教派，现在主要存在于美国宾夕法尼亚州东南部〔niobium〕A silvery, soft, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductivity research. Atomic number 41; atomic weight 92.906; melting point 2,468°C; boiling point 4,927°C; specific gravity 8.57; valence 2, 3, 5. See table at element 铌：一种象银的、柔软的、可延展的金属元素，主要存在于铌钽物中，用于钢铁合金、弧形焊接以及超导（电）性研究中。原子序数41；原子量92,906；熔点2,468°C；沸点4,927°C；比重8.57；化合价2,3,5 参见 element〔thyroglobulin〕A thyroid protein that stores iodine-containing hormones and is typically present in the colloid of thyroid gland follicles.甲状腺球蛋白：一种内部贮有含碘激素的甲状腺蛋白质，主要存在于甲状腺小囊的胶质里〔alkaloid〕Any of various organic compounds normally with basic chemical properties and usually containing at least one nitrogen atom in a heterocyclic ring, occurring chiefly in many vascular plants and some fungi. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.生物碱：有机化合物的一种，通常呈碱性且在一杂环中至少含有一个氮原子，主要存在于许多维管植物和一些真菌中。许多生物碱，如尼古丁、金鸡纳霜、可卡因和吗啡都以其毒性或在医药方面的特性而为人们所熟知〔feldspar〕Any of a group of abundant rock-forming minerals occurring principally in igneous, plutonic, and some metamorphic rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely, barium. About 60 percent of the earth's outer crust is composed of feldspar.长石：任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钡的铝硅酸盐，地球的外层地壳中约百分之六十是长石〔glycogen〕A polysaccharide, (C6H 10O 5) n, that is the main form of carbohydrate storage in animals and occurs primarily in the liver and muscle tissue. It is readily converted to glucose as needed by the body to satisfy its energy needs. Also called animal starch 肝糖：糖原，(C6H 10O 5) n，构成碳水化合物贮存在动物体组织中的主要形式，主要存在于肝和肌肉，可备来转化成葡萄糖以补充身体所需能量 也作 animal starch |
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