actinium (A radioactive element of the actinide series, occurring as a decay product of uranium. It is used as an alpha particle source and in neutron production) |
锕 |
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actinium A |
锕 A |
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action group (A collection of persons united to address specific sociopolitical or socioeconomic concerns) |
行动组 |
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activated carbon (A powdered, granular or pelleted form of amorphous carbon characterized by a very large surface area per unit volume because of an enormous number of fine pores) |
活性炭 |
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activated sludge (Sludge that has been aerated and subjected to bacterial action; used to speed breakdown of organism matter in raw sewage during secondary waste treatment) |
活性泥 |
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activated sludge |
活性的污泥 |
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active participation (The involvement, either by an individual or a group of individuals, in their own governance or other activities, with the purpose of exerting influence) |
积极参与 |
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active population (The number of people available and eligible for employment within a given enterprise, region or nation) |
活动人口 |
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actual stress |
实际胁迫 |
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acute stress |
急性胁迫 |
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adaptable species |
适应性强的物种 |
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adaptation |
适应性 |
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adaptation period |
适应期 |
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adaptive capacity |
适应能力 |
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addition polymer (A polymer formed by the chain addition of unsaturated monomer molecules, such as olefins, with one another without the formation of a by-product, as water; examples are polyethylene, polypropylene and polystyrene) |
加成聚合物 |
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additional attack |
额外袭击指病虫害 |
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additional packaging (Additional packaging around the normal sales packaging. For example as protection against theft or for the purpose of advertising; the customer may leave the additional packaging in the shop for waste collection) |
附加包装 |
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additional stress factor |
附加胁迫因子 |
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additional stressor |
附加胁迫因子 |
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additive (Substances mixed in small quantities with another product to modify its chemical or physical state. Additives are used to make food look visually more attractive, in the case of colouring agents, as well as to preserve and extend the life of the product) |
添加剂 |
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