查询词典 Al

The recent development of grain refining, interaction between Si and grain refiners, and grain refining mechanisms in hypoeutectic Al-Si casting alloys are overviewed in this paper.

仅对Al-Si铸造合金细化处理的最新进展、Si与晶粒细化剂的交互作用和晶粒细化机理进行综合评述。

It is for the first time found that the liquid hypoeutectic Al-Fe alloy has a critical temperature of 920℃ in the curve of the cluster size to temperature. Below 920℃ the structural change is predominantly in the medium-range order, while in the short-range order above 920℃.

首次发现，亚共晶Al-Fe合金熔体的原子团簇尺寸等在920℃左右存在明显的变化。920℃以下熔体结构的变化以原子团簇尺寸即中程尺度参数的变化为主，而920℃以上则以配位数等短程序参数的变化为主。

The results show that Be addition can effectively lower the eutectoid temperature of the hypoeutectoid Cu-Al alloy, but has no effect for the order-disorder transition.

实验结果显示，铍含量可有效降低Cu-Al亚共析合金之共析温度，扩大β单相区；而铍含量对序化结构转变温度并无明显影响。

On the other hand, medium-energy IBAD techniques can hinder the interdiffusion of interfacial atoms for Mo/Al〓O〓 and W /AlN systems at high temperature rigon. As a result, the stability of the interfaces can be improved.

同时发现，中能IBAD技术可以抑制高温情况下Mo/Al〓O〓及W/AlN界面处的原子扩散，从而可以提高其界面的高温稳定性。

On the basis of analysis of exiting problems, it is thought impendent and necessary for the Al-Si alloy to develop a healthy、effective alternative with high quality as well as its related techniques.

含铈的混合稀土是Al Si合金良好的变质剂，无渣无污染，节约能源，提高生产效率，提高合金的实收率，降低产品的综合成本，有着良好的应用前景。

During the actual production, that the oxygen contamination from the crucible material by heat composition increases the oxygen content of molten steel will result in melting losses of the alloys in the molten steel, and will results in more heavier melting losses of the alloys, incontrollable exact chemical content of molten steel, increment of oxide inclusions and bad processability and serviceability, especially in the high strength(σb≥1600MPa) steels and alloys with special performance used in aerospace industry, manufacturing industry for precision instruments and meters, military industry, nuclear industry etc. because these steels usually have a high content of some active alloys such as Ti, V, Nb, Al, RE, etc. and a nearly zero content of dissolved oxygen.

实际生产中，如果炉衬热分解向钢液供氧，势必会造成钢液中合金元素的烧损，尤其是在航空航天、精密仪器仪表制造、军工及核工业部门使用的某些具有特殊性能的高强度(抗拉强度σb≥1600MPa)合金或钢材，因它们通常需要具有较高的活泼合金元素(如Ti、V、Nb、Al、RE等)含量，且钢中溶解氧含量接近于零，炉衬热分解供氧将造成这些合金元素的大量烧损，其结果是钢液化学成分难以精确控制，并增加了氧化物夹杂含量，恶化了钢的加工和使用性能。

They could be recruited from bone marrow into the infarcted site of myocardium only in groups AL and BL.

这些干细胞可以由骨髓来补充且作用在受损的心肌，只有在AL及BL这两组能观察到。

3DAP constructional atom map demonstrated that Si and Al are rejected from the alloy carbide, whereas Mn and V were inhomogeneously distributed.

非碳化物形成元素Si和Al主要分布在碳化物/基体界面处； V和Mn主要分布在碳化物内层，而Mo和Nb分布在整个碳化物区域。

As a result, when in , subset of MA, obtained by imposing constraints on MA, AL is intensional because =L is equivalent with ≡.

在考虑了复制操作和限制操作的情况下，提出了逻辑等价的协归纳操作描述，并利用协归纳关系与进程结构同余关系进行比较，证明了若对MA加上约束条件得到子集MAsynIF，此时逻辑等价与结构同余关系是等价的，即AL在MAsynIF中是内涵的。

With the increase of? Al content, the mixture frcture feature of cleavage and intercrystalline appears in weld overlay.

并且，随着堆焊层含Al量的增加，堆焊层出现解理与沿晶混合断裂特征。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。