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Terms for subject Environment containing | all forms
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半金semi-metal An element having some properties characteristic of metals and others of non-metals. Many metalloids give rise to an amphoteric oxide (e.g. arsenic or antimony) and many are semiconductors (有一些金属特性和非金属特性的元素。很多非金属物质产生两性的氧化物(例如砷或锑)并且很多是半导体。)
attribute A distinctive feature of an object. In mapping and GIS applications, the objects are points, lines, or polygons that represent features such as sampling locations, section corners (points); roads and streams (lines); lakes, forest and soil types (polygons). These attributes can be further divided into classes such as tree species (Douglas-fir and ponderosa pine) for forest types and paved and gravel for road types. Multiple attributes are generally associated with objects that are located on a single map layer (某个物体的特殊性质。在绘图和GIS应用程序中,物体包括点,线,多边形,它们代表一些特性,比如地点,区域角落(点),路线和河流(线);河,森林和土壤类型(多边形)。这些属性可以被进一步分类,比如按照树木种类分为花旗松和西黄松,按照道路种类分为铺好的路和碎石路。在单一的地图层上,一般会有多种属性。)
有机金化合物organometallic compound Molecules containing carbon-metal linkage; a compound containing an alkyl or aryl radical bonded to a metal (分子化合物含碳和金属链;或者含有烷基芳的粘结金属。)
毒性金toxic metal Metals (usually heavy metals) which interfere with the respiration, metabolism or growth of organisms (妨碍呼吸、新陈代谢或肌体生长的金属(通常是重金属))
物理physical property Property of a compound that can change without involving a change in chemical composition (无需化学成分的变化就能改变的属性。)
生物biological attribute Properties or features belonging to living organisms (属于生物体的属性或特征。)
重金heavy metal A metal whose specific gravity is approximately 5.0 or higher (比重接近或高于5.0的金属。)
重金区隔化heavy-metal compartmentalization
重金胁迫heavy-metal stress
重金负荷heavy metal load The amount of stress put on an ecosystem by heavy metal pollution released into it (重金属污染排放到生态系统,对生态系统所造成的压力负荷。)
metal An opaque crystalline material usually of high strength with good electrical and thermal conductivities, ductility and reflectivity (一种不透明晶体材料,通常具有高强度及良好的导电性、热导率、延性和反射性。)
冶炼metal smelting A metallurgical process in which ore mixtures are heated above melting point to extract or yield a crude metal (一个冶金过程,在这个过程中, 矿石混合物被加热高于熔点以便提取或生成粗金属。)
制品metal product No definition needed (无需定义。)
制品产业metal products industry Industry related with the primary metal processing and fabricated metal products manufacturing. The most important end uses of the products of the metals industries are automobiles, machinery, appliances, electrical equipment, structures, furniture, and containers (与初级金属加工和装配金属制品制造相关的行业。最重要的产业制品的终端用户是汽车、机械、家电、机电设备、建筑、家具、集装箱。)
加工metal working
废料metal waste Metal material discarded during manufacturing or processing operations which cannot be directly fed back into the operation; Worn or discarded metal materials removed from service at the end of its useful life (制造、加工处理过程中被废弃的、不能直接回流使用的金属材料;达到其服务使用寿命的旧的或丢弃的金属材料。)
废物scrap metal Any metal material discarded from manufacturing operations and usually suitable for reprocessing (制造过程中丢弃的金属材料,通常可重用。)
氧化物metal oxide Any binary compound in which oxygen is combined with one or more metal atoms (氧结合一个或更多的金属原子的二元化合物。)
污染物metal contaminant
矿物metallic mineral Minerals containing metals, such as bauxite, pyrite, etc. (含有金属的矿物,如铝矾土、黄铁矿等等。)
表面处理metal finishing A process in which a chemical or some other substance is applied to metals as a way to clean, protect, alter or modify appearance or physical properties, especially surface properties (一个处理过程;在这个过程中,化学或其他物质作为一种清洁、保护、改变或改善外观或物理性质的方法用于金属,特别是其表面性质。)
镀层metal plating Forming a thin, adherent layer of metal on an object (在物体上形成一层薄的金属。)
非金non-metal A nonmetallic element, such as arsenic or silicon, that has some of the properties of a metal (非金属元素,如砷或硅,即具有某金属的一些性质。)
非金non-metallic mineral Minerals containing non-metals, such as quartz, garnet, etc. (含有非金属的矿物,如石英、石榴石等)
非铁有色non ferrous metal
非铁金non-ferrous metal Any metal other than iron and its alloys (任何不是铁及铁合金的金属。)
非铁金non-ferrous metal industry Industry that deals with the processing of metals other than iron and iron-base alloys (涉及不非铁和铁基合金等金属加工的产业。)