In 1952 in the austrian towns of Linz and Donawitz, a steelmaking process was established. This was the LD process, which used oxygen gas for the oxidation of impurities in iron.

1952年在奥地利的林茨和德那维茨两地诞生了一种炼钢方法。这就是氧气顶吹转炉炼钢法(LD炼钢法)。这种方法使用氧气来氧化铁水中的杂质。

Unplasticized polyvinyl chloride (PVC-U)pipes and fittings for drinking water supply--Extractability of lead,tin,cadmium and mercury occurring as impurities--Test method and permitted levels

GB9644-1988硬聚氯乙烯(PVC-U)饮水管材和管件铅、锡、镉、汞的萃取方法及允许值

Isopar fluids are manufactured under special conditions to ensure batch-to-batch uniformity and to eliminate unwanted impurities , such as aromatics, unsaturated olefins and reactive polar compounds.

Isopar溶剂在特定条件下生产，以确保各批次产品之间保持一致性，减少不需要的杂质如芳烃、不饱和烯烃和活性极性化合物的含量。

NF3 is a colorless gas. Trace quantities of impurities can impart a musty or pungent odor to the gas.)

NF3是无色气体。痕量的杂质会使气体带有一种霉味或刺激性气味。

Filtering the water removed some of its impurities .

把水过滤一下除去了一些杂质。

chalk:a soft, compact calcite, CaCO, with varying amounts of silica, quartz, feldspar, or other mineral impurities , generally gray-white or yellow-white and derived chiefly from fossil seashells.

白垩:一种松软的方解石粉块,CaCO,含有不等量的硅石、石英、长石或其它矿物杂质,通常为灰白色或黄白色,从贝类化石中制得.

The activation analysis method for the determination of elemental impurities in semiconductor silicon materials

半导体硅材料中杂质元素的活化分析方法

Bessemer process:a method for making steel by blasting compressed air through molten iron to burn out excess carbon and impurities .

贝塞麦炼钢法:吹入压缩空气通过熔融的钢铁以燃尽多余的碳和杂质的一种炼钢方法。

Intrinsic semiconductors have a high degree of chemical purity, but their conductivity is poor. Extrinsic semiconductors contain impurities that produce much greater conductivity.

本质半导体的化学纯度很高，而电导率很低;杂质半导体含有杂质，造成更高的电导率。

Not any ore can be used for the extraction of the metal. Generally speaking a usable ore must be relatively rich in the compounds of the metal and low in unwanted impurities .

并非任何一种矿石都可用来提炼金属。总的说来．有价值的矿石其金属含量应比较丰富，杂质含量应较低。

The separation of the seven impurities was accomplished with a Dionex IonPacAS11 column and the analysis was completed in 15 min. The method is simple, rapid, sensitive and accurate with a wide linear range and small reagent consumption.

采用AS11型阴离子色谱柱,样品测定的整个过程可在15min内完成。实验结果表明,该方法具有分析时间短线性范围宽灵敏准确试剂用量少等优点。

Remove impurities from(fats),eg by heating

除去(油脂)中的杂质(如用加热法)

clear the water from impurities

除去水中污物

After the removal of impurities , it is necessary to remove the excess oxygen remaining in the metal. Defoliation is achieved by adding elements which have a greater affinity than iron for oxygen. The added elements form oxides which are insoluble in iron, and are removed into slag.

除去杂质后，还必须除去钢水中过剩的氧。脱氧是加进同氧的亲和力比铁更大的元素来实现的。这些元素生成不溶于钢水的氧化物，因此进入炉渣。

During the early stages of the blow, lime (CaO)is added and this combines with oxidized impurities to form a slag.

吹炼初期，加入石灰(CaO)与已氧化杂质化合造渣。

During the blow, the impurities are removed in the following order: silicon, manganese, phosphorus, carbon and sulphuric. Carbon oxidises to form CO which is insoluble in the slag and escapes to the mouth of the converter where it burns to form CO2.

吹炼过程中，杂质是按以下次序除去的:硅、锰、磷、碳、硫。碳氧化后生成不溶于渣的一氧化碳，因此在炉口燃烧生成二氧化碳逸出。

Purity--it should be as low in undesirable impurities as possible; Uniformity-it should have as consistent a composition as possible from batch to batch.

纯度--杂质含量应尽可能低;均匀性--不同批次的矿石的化学成分应尽可能地一致。

Impurities that promote deterioration of polymers can be foreign materials, such as residues from polymerization catalysts

促使聚合物劣化的杂质可能是外加的物质，如残存的聚合用催化剂。

A metamorphic rock formed by alteration of limestone or dolomite,often irregularly colored by impurities ,and used especially in architecture and sculpture.

大理石由石灰岩或白云岩变化而来的一种变质岩，常有不规则的杂质色块，专门用于建筑和雕塑

Any of several carcinogenic or teratogenic heterocyclic hydrocarbons that occur as impurities in petroleum-derived herbicides.

戴奥辛一种致癌或致畸杂环族碳氢化合物，在从石油提取的除锈剂中以不纯物出现

Article 27In selling products, sellers, may not mix impurities or imitations into the products, nor substitute a fake product for a genuine one, a defective product for a high-quality one, nor pass a substandard product off as a good-quality one.

第二十七条 销售者销售产品，不得掺杂、掺假，不得以假充真、以次充好，不得以不合格产品冒充合格产品。

Article 20 In producing products, producers may not mix impurities or imitations into the products, nor substitute a fake product for a genuine one, a defective product for a high-quality one, nor pass a substandard product off as a good-quality one.

第二十条 生产者生产产品，不得掺杂、掺假，不得以假充真、以次充好，不得以不合格产品冒充合格产品。

Article 4 It is prohibited to forge or falsely use authentication marks, famous-and-excellent-product marks or other product quality marks; it is prohibited to forge the origin of a product, to forge or falsely use the name and address of a factory of another producers; and it is prohibited to mix impurities or imitations into products that are produced or sold, or pass a fake product off as a genuine one, or pass a defective product off as a high-quality one.

第四条 禁止伪造或者冒用认证标志、名优标志等质量标志;禁止伪造产品的产地，伪造或者冒用他人的厂名、厂址;禁止在生产、销售的产品中掺杂、掺假，以假充真、以次充好。

Animal and vegetable oils and fats--Determination of insoluble impurities content

动植物油脂中不溶性杂质含量的测定

Grinding low grades of graphite to remove impurities , pencil makers elsewhere found difficulties.

对于各地的铅笔制造者来说，碾磨碎低品质的石墨以去掉里面的杂质，是十分困难的。

Any of several forms of aluminum oxide,Al2O3,occurring naturally as corundum,in a hydrated form in bauxite,and with various impurities as ruby,sapphire,and emery,used in aluminum production and in abrasives,refractories,ceramics,and electrical insulation.

矾土，氧化铝一种氧化铝的形式，Al2O3，以钢石的形式存在，水合形式存在于铝土矿中，杂有各种不纯物，如红宝石、蓝宝石、金刚砂，用于制造铝、研磨剂、耐火材料、瓷器和电子绝缘物

Impurities consisting of such organic materials as wood, plastic, paint, and fabric can be burned off.

废金属中的有机物杂质，如木料、塑料、涂料和织物，能被烧除。

The experimental results show the whole method is convenient, precise and effective to eliminate impurities in samples.

该法操作简便、结果准确可靠,能有效排除杂质的干扰。

Clean:Free from dirt, stain, or impurities ; unsoiled.

干净的:无灰尘、污迹或杂质的;未污染的.

Good linearities between the peak areas and concentrations of all relevantimpurities were achieved. The RSDs of impurities varied between 0.22% and 8.32%.

各杂质在检测条件下有很好的线性,所测杂质的相对标准偏差范围为0.22%-8.32%。

of impurities

杂质的

solid impurities

固体杂质

trace impurities

n.微量杂质,痕量杂质

metal impurities

n.金属杂质

mobile impurities

n.流动杂质

coarse impurities

n.粗杂质

foreign impurities

n.杂质,含杂

harmful impurities

n.有害杂质

impurities of seam

n.煤层中杂质,煤层夹矸

impurities picking

n.拣矸

impurities in coal

n.煤中杂质,煤中包体

resinous impurities

n.树脂状杂质

limit of impurities

杂质限度

impurities in a herb

草药的杂质

ashforming impurities

n.成灰杂质

atmosphere impurities

n.大气杂质

mechanical impurities

n.机械杂质

indigenous impurities

n.内在夹杂

ash-forming impurities

n.形成灰分的杂质

diffusion of impurities

杂质扩散

surfacecoated impurities

n.表面粘附杂质

objectionable impurities

n.有害杂质,有害物质

non-combustible impurities

不燃杂质

redistribution of impurities

n.杂质的再分布

pan off impurities in a herb

淘去草药的杂质

pan the impurities in the drugs

淘去药物的杂质

limit of detection of impurities

n.杂质检测极限

impurities on the surface of drugs

药物表面的杂质

pan off impurities in a herb with water

用水淘去草药的杂质

centrifugal suction blower for impurities

n.离心式吸尘风扇