aluminum 四级六级考研托福GMAT

A new non-cyanide zinking process for high-Si aluminum cast has been studied in this paper.

研究了一种无氰的高硅铝铸件的浸锌新工艺。

Aluminum alloy shell, elegant, durable, heat eliminable.

铝合金外壳，时尚，耐用，散热好。

The central concept of Inceptisols is that of soils of soills of humid and subhumid regions that have altered horizons that have lost bases or iron and aluminum but retain some weatherable minerals.

始成土的主要特性在于它分布在湿润半湿润地区，发育有丧失盐基或铁铝但保留可风化矿物的土层。

Study the effect of nine kinds of coagulant aid and precipitant aid such as atlapulgite to coagulant aluminum salt dispose of organic wastewater of high concentration, then optimize and assemble.

研究了采用活性白土等九种助凝助沉剂在铝盐混凝剂处理高浓度有机废水时的作用,继而化组合,结果良好,如用微量聚丙烯酰胺和0。

Studies on heat exchanger aluminum fin precoat of air conditioner were reviewed. Six types of precoat as well as the application of hydrophilic precoat were described.

回顾了空调机热交换器预涂层铝散热片的研究概况，介绍了6种类型预涂层散热片材料的基本情况以及亲水性预涂膜散热片的应用效果。提出了该课题今后的研究方向。

High processing accuracy due to super precision linear motion pair adopted in mobbing parts. Used for corner punching and riveting combination of aluminum window and door.

同时对门窗的两个角加工,加工效率高,采用柱塞式液压系统,噪音小,运平稳。

The dial shall be made of copper aluminum alloy, inalterable black numerals and graduation on white background. The manufacture of same will be to applicable standards.

仪表的刻度盘应为机械指针式，应选用铜铝合金材质，底色为白色，上面标的数字和刻度为黑色（不易褪色），刻度分配应采用厂家提供的标准。

Therefore the oxidation kinetics of scratched aluminum is associated with the exoelectron emission decay of the scratched surface under ordinary temperature and reduced Pressure.

由此,通过在常温低压下铝划伤表面外逸电子发射衰减,讨论了划伤铝初始氧化的动力学过程。

Finally, a mechanism of AC etching for aluminum foil in HCl and a theoretical rule for choosing electroetching conditions were suggested on the results.

根据这一机理，提出了铝箔的交流腐蚀工艺化原则，并用实验对这一原则了初步验证。

Aluminum sulfate, calcium chloride and lime are taken as raw materials.The products have high flocculability because of the existing of sulfate ion .

该工艺以硫酸铝、铝化钙和石灰为原料,引入硫酸根离子,产品的絮凝性能大大提高。

Therefore, in order to guarantee aluminum foil paper cards and membership cards and bearing in mind the production quality materials and master lixivial.

因此，为包管铝箔纸制卡和会员卡制作质量，给夺目质料的采取和把持技艺给领。

Anionic electrodeposit coating line for aluminum shell of solar water heater is introduced.Anodic oxidation,anodizing electrolytic coloring and anionic electrodeposit coating process are focused.

介绍了太阳能热水器铝材壳体阳极电泳涂装线设备,重点详述了阳极氧化、电解着色和阳极电泳涂装工艺。

In this paper, formulize concrete measures of optimal design of the extrusion die for a four-cavity thin wall aluminum alloy flat pipe.

阐述了该4腔薄壁铝合金扁管挤压模化设计的具体措施。

The passivation patinas and the composition of each phases becoming more homogeneous are moderator to the dealuminization corrosion of high aluminum bronze.

腐蚀钝化膜的形成及热处理后合金各相成分趋于一致，均使合金耐腐蚀性能得到改善。

Aluminum and titanium vacuum metallikon outside the glass bottle as a whole or in part, that produces a similar mirror reflection effect.

用铝和钛真空金属喷镀玻璃瓶在瓶内部的局部或局部爆发一种近似镜背的不直射成果。

27 Aft sponson aluminum alloy construction with machined frames and composite construction。 Houses main undercarriage and condenser for air conditioning system。

浮筒后部为铝合金，内装主起落架和空调系统的冷凝器。

Aluminum toxity is the main factor that limits crops growth in the acid soil, and many crops response to micromole aluminium.

铝毒是酸性土壤限制作物生长的主要原因之一,许多作物对微摩尔浓度的铝发生毒害反应。

Various uniform and gentle colors such as brown,golden-yellow,golden-green and skyblue were put on aluminum surface via a variety of coloring methods.

论述了铝件阳极氧化着色工艺及着色的影响因素。

The article introduces the determination and computing method of basicity of the polysalt like polymeric aluminum ferric-calcium magnesium salt flocculants.

本文介绍了多元盐如复合铝铁钙镁盐絮凝剂盐基度的测试及其计算方法。

Aluminum is made from bauxite.

铝是从铝土矿中提炼出的。