查询词典 aluminum

In seawater and fresh water, aluminum alloy was not corroded as the all protection of alclad. In salt lake, the alclad on LC4 aluminum alloy remaindered for half a year, and used up for one year. The base of LC4 aluminum alloy was corroded seriously.

在海水和淡水中，包铝层可以对铝合金基材起到完全的保护作用，使基材免遭腐蚀；而在盐湖水中，半年时LC4铝合金表面尚有包铝存在，而一年时LC4铝合金表面包铝已完全消耗至尽，LC4的基体发生严重腐蚀。

The surface of alveolate aluminum is a layer of firm aluminum alloy slab and what inside is beehive structure with aluminum foil.

蜂窝铝的表面为一层坚硬的铝合金薄板，而中心层是用铝箔制成的蜂窝结构。

Gibbsite from which, also known as the aluminum water of oxygen stone components for the Al 3, monoclinic, usually Species Flake collectivity; A Diaspor (diaspore; Empholite) also known as hard water with aluminum components α- AIO, the regular - Fe, Mn, rhomboidal, sustained Species Flake collectivities hardness (6-7); a water boehmite, also known as the mixing aluminum components γ- AlO, the rhomboidal appearing Aphanitic block or colloidal.

密度2-3。其中三水铝石又称水铝氧石，成分为Al3，单斜晶系，通常呈细鳞片状集合体；一水硬铝（diaspore；empholite）又称硬水铝矿，成分α-AIO，常含Fe、Mn，斜方晶系，多呈细鳞片状集合体，硬度大（6-7）；一水软铝石又称勃姆铝矿，成分γ-AlO，斜方晶系，常呈隐晶质块体或胶态。

Aluminum liquid refine is the key process of melting the aluminum alloy. The refined can remove hydrogenium, purify aluminum liquid, avoid pinhole point, which will influence on the mechanical and working performances directly.

铝液的精炼处理是铝合金熔炼过程中的关键工序之一，精炼能除氢和除渣，净化铝液，达到消除铸件针孔的目的，并直接影响铝铸件的力学及使用性能。

The principal ore of aluminum, composed mainly of hydrous aluminum oxides and aluminum hydroxides.

铝土矿铝的基本矿石，由含水的氧化铝和氢氧化铝组成

Friction coefficients and lubricative mechanics of Al-Fe-V-Si heat resistant aluminum under four conditions were researched by method of annulus compression, without lubricant, but in the presence of pure aluminum, graphite+oil, pure aluminum+graphite+oil.

摘 要：采用圆环压缩法检测Al-Fe-V-Si系合金在喷射沉积高温时变形的摩擦因数，研究未加润滑剂、加石墨+机油润滑、加纯铝润滑、加纯铝+石墨+机油润滑4种条件下的摩擦因数随变形温度变化的情况，并探讨其润滑机理。

It is possible to produce low-titanium aluminum alloy directly. Three months of periods of industrial test for production low-titanium aluminum alloy was conducted using the 80kA prebake electrolysis cells. The test results showed that the electrolysis cell can work stably, and the effect of TiO2 added into electrolyte on electrolytic process parameters, current efficiency, consumes of materials and energyare trifling. The titanium content in alloys is stable and the absorbility of Ti is high. The microstructure of electrolytic low-titanium aluminum alloy is homogeneous. The grain refinement effect is excellent comparing with that of alloys added titanium by melting Al-Ti master alloys and both alloys have the same grain refinement trend.

在80KA中型预焙电解槽上进行了为期三个月的低钛铝合金的工业试验，结果表明，电解槽工作状态稳定，TiO_2的加入对电解槽的主要工艺参数、电流效率、物料和能源消耗影响不大，合金的钛含量稳定，钛的吸收率高；所生产的电解低钛铝基合金的微观组织均匀，晶粒细化效果好，与熔配加钛的细化规律相同。

Aluminum/copper clad composite is produced by the method of aluminum/copper clad extrusion.In actual production,the interface between copper and aluminum separated from each other because of the untight bonding.

铜包铝线通常采用铜包覆铝坯料进行挤压生产，但实际生产中常出现因铜、铝固相结合不紧密而导致铜、铝界面分离的现象，为改善产品质量，提出采用低压压铸-冷挤压法加工制备铜包铝线。

The second consideration is properly connecting the ends of the aluminum magnet wire. The reason for this goes back to your high school chemistry course. You may remember that aluminum oxidizes much faster than other metals—in fact, if exposed to air, powdered aluminum will completely oxidize in a few days, forming a fine white powder.

第二个需要考虑的是铝漆包线的正确的端接，其原因你可以回忆一下你高中的的化学课程，你应该还记得铝比是其他金属更容易氧化的，如果暴露在空气中，铝粉会在几天内完全氧化，变成了很细的白色粉末。

To correct the variation resulting from exposure condition, an aluminum stepwedge was exposed simultaneously. By referring the image of aluminum stepwedge on each radiograph the equivalent aluminum thickness and corrected gray level intensity of the ROIs could be calculated as indicators of alveolar bone density. Nineteen specimens containing different amounts of hydroxy-phosphorite were radiographed.

用计算机测量定位投照的直接数字化牙片上感兴趣区(region of interest， ROI)的灰度，拍片时将一个铝制梯级同时曝光，根据已知的铝梯灰度和厚度推算ROI区灰度所对应的等效铝厚度和校正灰度来反映骨密度，从而校正由于投照条件差异造成的灰度误差。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥