查询词典 si-steel

Grain refining in hypoeutectic Al-Si casting alloys has become an essential practice of melt treatment.

对亚共晶Al-Si铸造合金进行细化处理已成为一种基本操作。

We combined the IBAD technique with vacuum deposition multi-layer method, Co—Si compound films had been synthesised and analysised.

本文将IBAD技术与PVD多层镀膜技术结合起来，首次进行了Co—Si化合物薄膜的合成研究。

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。

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。

So we asked Miles Jacobson, Studio Director at SI Games, to take us through some of the changes you'll want to hear about most...

现在我们就让SI的工作室总监Miles Jacobson 来介绍一些你最想了解的新变化。

The patterns of Reflection high energy electron diffraction from the epitaxial growth of Si-Ge crystal are interpreted basing on the kinetical diffraction theory of crystal.

在晶体衍射理论基础上，利用运动学理论解释了反射式高能电子衍射（reflection high energy electron diffraction， RHEED）在Si-Ge晶体外延生长过程中不同阶段出现的花样。

Similar to the oxidation process of Si(111)-7×7 by water,the gradual insertion of S atom into Si_a-Si_s backbond is possible to occur,and the insertion pathway,which begins with directly destroying Si_a-Si_s backbonds by a foreign H_2S molecule,remains more favorable.However,when H_2S attacks at the Si_a site to split Si_a-Si_s backbond with its S or H atom,there is no distinct thermodynamical and kinetical difference between these two attacking behaviors,whereas Si_a-Si_s backbond is easilier broken when H_2O attacks at the Si_a site with its O atom.This mainly lies in the fact that the electronegativity of oxygen is larger than that of sulfur.

5类似于H_2O对Si(111)-7×7的氧化历程，S原子逐步插入Si_a-Si_s键是可以发生的，且H_2S直接打开Si_a-Si_s键进而使S原子插入的途径仍是动力学上较为有利的，但H_2S以S或H原子进攻Si_a位从而打开Si_a-Si_s键的两种反应机制在动力学和热力学上并没有表现出明显的差别，而当H_2O以O原子进攻Si_a位时，Si_a-Si_s键则较容易断裂，这应归因于O的电负性比S大。

Comparative studies show that during the alteration of lamprophyre, K20, TiO2 and P205 were rather stable ,whereas Si,Ca Mg and Fe were evidently taken out or brought in.

对比研究表明，区内煌斑岩蚀变过程中K2O、TiO2、P2O5等的含量较稳定，Si、Ca、Mg、Fe等元素有明显的带入带出。

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。

Considered to issue all sorts of antioxidant in 1300 ℃ and 1500 ℃ temperature, if Al, Si, SiC and B4C are opposite,magnesian carbon brick fights the action of oxidisability.

探究了在1300℃和1500℃温度下各种抗氧化剂，如Al、Si、SiC和B4C对镁碳砖抗氧化性的功能。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。