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| Terms for subject Environment (7397 entries) |
| 南极圈生态系统 | Antarctic ecosystem | |
| 南极地区 | Antarctic region (An area within the Antarctic Circle that includes the fifth largest continent and its surrounding waters, consisting mostly of thick ice shelves) | |
| 南极洲 | Antarctica (A continent lying chiefly within the Antarctic Circle and asymmetrically centered on the South Pole: it consists of an ice-covered plateau (some 95 percent of Antarctica is covered by an icecap averaging 1,6 km in thickness), 1800-3000 m above sea level, and mountains ranges rising to 4500 m with some volcanic peaks; average temperatures all below freezing and human settlement is confined to research station) | |
| 南美洲 | South America (A continent in the southern part of the western hemisphere, astride the equator and the Tropic of Capricorn, bordered by the Caribbean Sea to the north and between the Atlantic and Pacific Oceans, connected to North America by the Isthmus of Panama, and divided into twelve countries: Argentina, Bolivia, Brazil, Chile, Columbia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay and Venezuela) | |
| 南美洲锥虫病；恰加斯氏病 | Chagas' disease (A form of trypanosomiasis found in South America, caused by the protozoan Trypanosoma cruzi, characterized by fever and often inflammation of the hearth muscle) | |
| 南亚 | Southern Asia (A geographic region of the Asian continent bordered in the north by the countries of Central Asia and in the south by the Arabian Sea and the Bay of Bengal, extending westward into Iran and eastward into China, including Afghanistan, Pakistan, India, Nepal, Bangladesh, Burma, Bhutan and Sri Lanka) | |
| 南冰洋 | Antarctic Ocean (The waters, including ice shelves, that surround the continent of Antarctica, which comprise the southernmost parts of the Pacific, Atlantic and Indian oceans, and also the Ross, Amundsen, Bellingshausen and Weddell seas) | |
| 南部非洲 | Southern Africa (A geographic region of the African continent astride the Tropic of Capricorn, including Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia and Zimbabwe, and also the Kalahari Desert, Zambezi River and Orange River) | |
| 块根农作物 | root crop (Plants which store edible material in a root, corm or tuber; root crops used as food vegetables or fodder include carrots, parsnips, swedes and turnips; starchy root crops include potatoes, cassavas and yams) | |
| 字典 | dictionary (A reference book containing an explanatory alphabetical list of words, as a book listing a comprehensive or restricted selection of the words of a language; identifying usually, the phonetic, grammatical, and semantic value of each word, often with etymology, citations, and usage guidance and other information) | |
| 遗传多样性 | genetic diversity (The variation between individuals and between populations within a species) | |
| 遗传资源 | genetic resource (The gene pool in natural and cultivated stocks of organisms that are available for human exploitation. It is desirable to maintain as diverse a range of organisms as possible, particularly of domesticated cultivars and their ancestors, in order to maintain a wide genetic base. The wider the genetic base, the greater the capacity for adaptation to particular environmental conditions) | |
| 遗传效应 | genetic effect (Inheritable change, chiefly mutations produced by chemical substances, herbicides, radiations, etc.) | |
| 遗传学 | genetics (The science that is concerned with the study of biological inheritance) | |
| 遗传物质，基因物质 | germ plasm (The hereditary material transmitted to the offspring via the gametes) | |
| 遗传变异 | genetic variation (Change in one or more phenotypic characteristics, due to gene mutation or rearrangement, environmental effects, etc.) | |
| 遗传信息 | genetic information (The information for protein synthesis contained in the nucleotide sequences of the DNA polynucleotide chain) | |
| 遗留风险 | residual risk (Remaining potential for harm to persons, property or the environment following all possible efforts to reduce predictable hazards) | |
| 遗产价值 | bequest value | |
| X射线 | X ray (A penetrating electromagnetic radiation, usually generated by accelerating electrons to high velocity and suddenly stopping them by collision with a solid body, or by inner-shell transitions of atoms with atomic number greater than 10; their wavelength ranges from about 10(-5) angstrom to 10 angstroms, the average wavelength used in research being 1 angstrom) |