aluminum 四级六级考研托福GMAT

Aluminum alloy shell, elegant, durable, heat eliminable.

合金外壳，时尚，耐用，散热好。

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铸件的浸锌新工艺。

Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol.

以合成出的丙为催化剂,无水氯化锌为助催化剂,用丙醛一步合成了丙丙酯,收率可达92％,选择性可达93％。

The equipment is used for mensurating anti-oxidability of magnesium carbon brick and aluminum magnesium carbon brick.

该设备用于镁碳砖、碳砖抗氧化性的测定。

Thermite is aluminum powder and a metal oxide which produces an aluminothermic reaction known as a thermite reaction.

热是粉，一种金属氧化剂，能产生我们所谓的热反应。

The new diffs are also quick and easy to maintain, and are strong featuring blue aluminum outdrive-saver rings.

新的差异时，也可方便快捷地维护好，是有烈的蓝色已经是节省戒指。

For the trading business, the company focuses on non-ferrous metals such as copper, aluminum, lead, zinc, kirksite,Zinc Concentrate,etc.

公司的贸易主要是经营铜、﹑铅﹑锌﹑锌合金和锌精矿等有色金属产品。

The species distribution in hydrolytic polymeric aluminum solutions is a research focus in the fields of analysis,catalysis,agrology,geochemistry,new materials,environmental science,biotoxicology,etc.

水解聚合形态一直是分析、催化、土壤、地球化学、新材料、环境科学和生物毒理学等众多领域研究的前沿和热点。

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铁钙镁盐絮凝剂盐基度的测试及其计算方法。

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

毒是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.

论述了件阳极氧化着色工艺及着色的影响因素。

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

浮筒后部为合金，内装主起落架和空调系统的冷凝器。

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

用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。

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。

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腔薄壁合金扁管挤压模优化设计的体措施。

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、化钙和石灰为原料,引入硫根离子,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。

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，提出了箔的交流腐蚀工艺优化原则，并用实验对这一原则进行了初步验证。

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