The following provides a brief review of applicable theory for pressure die casting下面简要评述一下适用于压力铸造的理论。
Precipitation-harden stainless steels have been developed by making certain alloy additions to martensitic, mi-austenitic and austenitic alloys.沉淀硬化不锈钢已通过添加某些合金元素到马氏体、半奥氏体和奥氏体钢中开发出来。
(3) Making u of free-silicon nodularizer results in a requirement for improved spheroidizing treatment technology. same girl使用无硅球化剂需要对球化处理工艺进行改进。
(4) In ductile iron trace element levels should be as low as possible球墨铸铁中微量元素的含量应尽可能低。
(6) The difference in temperature between solidifying metal and mould will be small when the casting is of large cross ction and the conductivity of the mould material is poor.当铸件的断面尺寸大、铸型材料的热导率低时，凝固金属和铸型之间的温差就小。
(1) There appear to be no impurities in this long welding am.这条长焊缝中似乎没有什么
杂质。
(3) It is important to reduce the carbon level in stainless steels as low aspossible.将不锈钢中的碳量减得尽可能的低是重要的。
(1) Widespread u is made of slag coagulants to remove slag or dross from the top of the melt in ladles沈阳日语翻译广泛使用聚渣剂除去浇包内金属液表面的熔渣。
( 2) Each nucleation site gives ri to a crystal or grain which, when solidification is complete, meets neighboring grains at a grain boundary.每个结晶部位都产生一个晶粒，在凝固结束时与邻近的晶粒相会于晶粒边界。
(4) The advantage of induction furnaces melting is that it melts the metal with minimum element loss.感应炉熔炼的优点是元素损失很少。
(5) This workpiece that has been delivered to you has undergone a special protective process to enable it to withstand damage by corrosive agents it will encounter.这个工件在出厂前已经进行了特殊的防护处理，使其可耐腐蚀。
( 2 ) The defects of castings show considerable variety.铸造缺陷是多种多样的
( 3 ) Grain growth can be kept to a minimum by effective control of preheating and post-heating in welding process.在焊接过程中，通过有效地控制预热和焊后加热可将晶粒生长保持得最小。
Cast steels behave differently from cast irons which contain a lot of carbon.铸钢的性能不同于含碳量高的铸铁。
The instrument is characterized by its compactness and portability该仪器的特点是结构紧凑、携带方便。
(1)This metal matrix composite is fairly recent developmentdead这种金属基复合材料是最近开发出来的。
(2) The components may rve as an illustrative application of the surface alloying process.这些部件可用来说明表面合金化工艺的应用james white
国庆英语手抄报的内容
( 3 ) Silicon is much more soluble in austenite than phosphorus.硅在奥氏体中的溶解度比磷大得多。
( 1) This hydraulic press is chiefly characterized by its simplicity of operation and the ea with which it can be maintained.这台水压机的主要特点是操作简单、维修容易。
( 2 ) The device is shown schematically in Fig.3. 图3显示了这种装置的简图。
(4) The 61st World Foundry Congress was on in Beijing from September 24 toSeptember 29,1995.第61届世界铸造会议于1995年9月24至29日在北京举行。
(1) The letter A is commonly ud for austenite, F for ferrite, G for graphite通常用字母A表示奥氏体、字母F表示铁素体、字母G表示石墨。
live my life(2) The inner surface of this kind of workpiece castings is often protected against corrosion with a special coat.这种铸件的内表面通常使用一种特种涂层保护以抗腐蚀。
(1 ) This device exhibits a high efficient.这台设备的效率很高。
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( 2 ) The runner gate should have a flat bottom横浇道的底部要平。
(1) The thermal expansion coefficient of aluminium-silicon alloys is on the vertical axis纵坐标轴表示铝硅合金的热膨胀系数。英语简历范文
( 2 ) Cast irons differ in their graphite morphologies.各种铸铁的石墨形态不同。
(2)This equipment is a well-designed structure.
这台设备的结构设计得很好。
(4)Arnic has a diffusion coefficient an order of magnitude lower than that of boron and phosphorous.
砷的扩散系数比硼和磷低一个数量级。
( 1) Carbon is found in almost all ferrous metals.几乎所有的黑色金属中都含有碳。
( 2 ) An austenite shell is formed over the entire surface of the graphite nodules在石墨球的整个表面形成了一层奥氏体壳。
( 1 ) The ZA alloys has their distinguishing features high strength and excellent wear resistance.
ZA合金的显著特点是强度高、耐磨性能优良。
( 2 ) The graphite flotation may be due to the high CE value, heavy ction, or to a high pouring temperature.
石墨漂浮可能是由于碳当量高、铸件断面厚、或浇注温度高造成的。
( 3 ) Lower temperatures are associated with faster crystal growth rates.温度一低，结晶生长速度就快起来。
(7)The triple-diffud structure has its advantage of having a uniformly doped collector region.三次扩散结构具有掺杂均匀的优点。
(1) The pouring temperature must be below 1340℃ to minimize liquid shrinkage.my family 英语作文为了将液态收缩减为最小，浇注温度必须低于1340C。
(2) The dross problem is caud by the formation of magnesium oxides and sulfides resulting from the Mg treatment.浮渣是由镁处理中形成的氧化物和硫化物所造成的。
造型学校(2)Forcing the graphite flakes that are characteristic of gray iron to agglomerate into spheres is the challenge for the metallurgist.使作为灰铸铁特征的片状石墨聚集成球，对冶金学家是一个挑战。
( 6 ) Prented in the paper are new data on this subject.论文中提出了关于这一课题的新数据。
