查询词典 nickel-plate

Elinvar is a trademark for a kind of nickel-chromium steel used for watch springs because its elasticity is constant over a wide range of temperatures.

埃林瓦是一种用于手表弹簧的镍铬钢，因其能在很大的温度范围内保持一定的弹性。

Results The elastic limit and the relevant enclasp force of the casting clasp made from the l 8-8 nickel-chromium alloy were smallest and those of the clasps made from the cobalt-chromium alloys in various brands were different.

结果 不同品牌的钴铬合金铸造卡环弹性极限及其相应卡抱力不同，18 8镍铬不锈钢铸造卡环的弹性极限及其相应卡抱力最低。

The results show that, by the way of optimizing preparation condition, the spherical zirconia powders with suitable particle size distribution are prepared using chemical precipitation method. Using heterogeneous chemical precipitation coating technique, the sph, erical nickel coated zirconia powders are prepared and the heterogeneous nucleation can be done on the surface of spherical zirconia powders. The thickness of coated layer, homogeneous degree and crack of surface can be controlled by the way of controlling powder concentration, adding rate of reactants feeding and adding surface active agent.

研究表明，采用化学沉淀法，通过优化制备工艺条件，可以制备粒径分布较均匀的球形氧化锆粉体；利用非均相化学沉淀包裹技术制备的金属镍包裹氧化锆微球粉体，球形氧化锆颗粒表面作为异相成核的场所，通过控制颗粒浓度、加料速度以及添加表面活性剂等工艺条件，可以调控包裹层厚度、表面均匀度以及表面裂纹等。

During the past decade, considerable research effort has been directed towards the development of in situmetal matrix composites, in which the reinforcements are formed in situ by exothermal reactions betweenelements or between elements and compounds. Using this approach, MMCs with a wide range of matrix materials(including aluminum, titanium, copper, nickel and iron), and second-phase particles including borides, carbides

在过去的几十年中，对于金属基复合材料我们做了大量的研究工作，这些复合材料的增强体都是通过元素之间或者元素与化合物之间的原位放热反应而加入到基体中的，这种方法广泛应用在生产金属基体材料（包括铝、钛、铜、镍和铁）和第二相颗粒中（包括硼、碳、氮、氧和他们的混合物）。

In this work , 1,8-octodiol, the starting material, reacted with 40% hydrobromic acid to produce 8-bromooctan-1-ol, with the catalytic action of PPTs, its hydroxyl group was protected by 2,3-dihydropyran. Then it coupled with 1-heptaalkyne, by means of P-2 nickel as catalyst, stereoselectivity catalysis hydrogenated, with the catalytic action of acid to take off extremital 2, 3-dihydropyran which protected hydroxy group, then used PCC to oxidize alcohol into corresponding aldehyde.

以1，8-辛二醇为原料，与40%氢溴酸进行单溴代反应，得到8-溴-1-辛醇，在对甲苯磺酸吡啶盐的催化下与2，3-二氢吡喃反应，保护分子中的羟基，再与1-庚炔进行偶联，以P-2镍为催化剂立体选择性催化加氢，酸性条件下脱末端的2，3-二氢吡喃对羟基的保护，使用氯铬酸吡啶盐将醇氧化成醛。

A series of light-weighted metal coated functional composites have been fabricated by electroless metal plating on activated ultrafine particles, with nickel or copper as the shell, ultrafine particles as the core templates, such as alumina, titania, ferriferous oxide, natural pollen, hollow microspheres.

结合分子自组装技术在硅片表面制备了密堆积的胶体钯纳米薄膜，并首次提出了一种无需氯化亚锡敏化、基于分子自组装膜化学吸附胶体钯纳米微粒的活化方法，成功地引发了金属铜或镍在金属与非金属表面的无电子沉积，制备了一系列金属包覆非金属粉末的轻质超细核壳结构功能材料。

At present, it has been demonstrated that there is abnormality of microelements in psoriatic patients, and the effect of microelements, including zinc, copper, manganum, ferrum, selenium and nickel, on psoriasis are summarized here.

目前许多研究发现，银屑病患者存在着微量元素的异常，文中从锌、铜、锰、铁、硒等方面分析微量元素与银屑病的影响。

The cold mineral spring is rich in abundant macro-elements such as hydrogen, carbon, phosphor, oxygen and nitrogen, etc., and it abundantly contains 17 microelements such as ferrum, copper, zinc, nickel and silicons, etc. necessary to human body.

冷矿泉富含丰富的宏量元素氢，碳，磷，氧，氮等，富含丰富的铁，铜，锌，镍，硅等到17种人体必需的微量元素。

The characteristics of the strains towards chromium, nickel, cadmium, copper and ferrum adsorption have been studied comprehensively.Based on these conditions the research of the wastewater treatments such as galvanization, hardware industry, leather production, and printing and dyeing using the strains has been carried out.

通过系统的研究，构建了10株以解脂假丝酵母和产朊假丝酵母为出发菌的基因工程菌株；对菌株处理重金属铬、镍、镉、铜和铁等重金属的性能进行了较全面的分析。

The cold mineral spring is rich in abundant macro-elements such as hydrogen, carbon, phosphor, oxygen and nitrogen, etc., and it abundantly contains 17 microelements such as ferrum, copper, zinc, nickel and silicons, etc.

冷矿泉富含丰富的宏量元素氢、碳、磷、氧、氮等，富含丰富的铁、铜、锌、镍、硅等到17种人体必需的微量元素。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷