合金的

The results show that Bi and Sb are mainly distributed on grains and grainboundaries, and Bi on grainboundaries there are mainly simple substance Bi particles, Sb in grains are intermetallics containing stibium. The tensile strength, yield strength, elongation and variation of area of halfhard brass containing bismuth and stibium are 478.9 MPa, 295 MPa, 15.1% and 29.3% respectively. Corresponding to HPb59-1, the cutting property of brass containing bismuth and stibium is excellent. The brass containing bismuth and stibium shows excellent dezincification corrosion resistance, and the depth is 323 μm.

结果表明：添加的Bi和Sb主要以单质或化合物方式存在于无铅黄铜的相内和相界处，Bi以单质颗粒存在于相界处，Sb以化合物形式存在于相内，这对提高合金切削性能有利；添加Bi和Sb黄铜的抗拉强度为478.9 MPa，伸长率为15.1%，断面收缩率为29.3%，屈服强度大约为295 MPa；添加Bi和Sb黄铜的切削性能比HPb59-1铅黄铜的优，合金的脱锌腐蚀性能良好，脱锌层厚度约为323 μm。

The oxidized rate decreases with the increase of the substitutional carbon at 900℃.

结果表明：在900℃氧化时，随着合金中的替代碳含量的增加，氧化速率逐渐下降；而在1000℃下氧化超过10min后，Si1-x-yGexCy合金的氧化基本上与碳的含量无关，与Si1-xGex的行为一致。

In order to guarantee continuous production of high silicon silicomanganese , throughput analysis of its process, restricted continuous production links are found out, a scheme concerned solving damage of equipment and erosion of taphole is brought forward as well as control craft's key links.

通过对高硅锰硅合金生产过程的分析，找出制约连续生产的限制性环节，并提出了解决设备损坏和出铁口侵蚀的方案，以及工艺过程控制的关键，从而保证高硅锰硅合金的连续生产。

By means of the Miedema formation energy model for binary system with the Tanaka modification by excess entropy and the Chou geometric model for ternary system, the interaction relation between rare earth element La and the constituent elements of Sn Pb alloy system was analyzed.

传统的Sn60 Pb4 0软钎料合金中添加微量稀土元素La( 0 0 2 4 %)，显著抑制了其显微组织中围绕先析出富Pb相的粗大的富Sn相晕圈的形成，实现了金属学组织的均匀化，并进而提高软钎料合金的高温拉伸强度 70 % [1] 。

Experimental results show that rapid solidification technology can remarkably optimize Mg-Zn-Nd alloy's microstructure and property,there are three zones of fine grain zone,columnar grain zone and equiaxial grain zone in ribbon's solidification structure,which reserve structure character of cast-magnesium alloy.

结果表明：快速凝固技术可显著优化Mg-Zn-Nd合金的组织结构与性能；薄带的凝固组织分为细晶区、柱状晶区、等轴晶区三个区域，保留了铸态凝固组织的特性；快速凝固技术的细晶强化和固溶强化可明显改善Mg-Zn-Nd合金的强度与塑性。

Two reasons can be explained the improvements of catalytic activities after the addition of Ce. One is the increase of the thermal stability of Ni-B and Ni-P nanoamorphous alloys, which retards the nanocrystalline Ni to aggregate during the exothermal reaction of benzene hydrogenation. The other is to make their grain sizes smaller, thus it increases the number of activity center in unit mass.

说明加入Ce提高催化活性的主要作用有两方面，一是提高Ni-B和Ni-P纳米非晶态合金的热稳定性，抑制催化苯加氢反应时大量放热促使纳米晶Ni的聚集长大；二是使生成的Ni-B和Ni-P纳米非晶态合金颗粒更为细小，从而增加单位质量样品的活性中心数量。

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。

On the other hand,it is demonstrated that pitting sensitivity of Al-6Mg-Zr-Sc alloy in the SRB solution is decreased and its microbiologically influenced corrosion r.

结果表明，添加Sc元素后，合金的氧化膜更加致密，具有更好的保护作用，使电极开路电位正移100 mV左右，同时Sc元素的加入降低了材料在SRB菌液中的点蚀敏感性，使材料耐微生物腐蚀性能得到提高，但是添加Sc后的合金对SRB更加敏感。

This study on creep behavior of TiAl Polysynthetically Twinned crystals was carried out primarily to understand the effect of lamellar orientations on creep behavior in TiAl alloys with lamellar microstructure. It also provides a theory fundament for microstructure control and design for TiAl alloys.

为了研究片层取向对片层组织TiAl合金蠕变性能的影响，同时为合金的组织控制及设计提供理论依据，本文对TiAl金属间化合物PST晶体（Polysynthetically Twinned Crystal）的高温蠕变行为进行了较为细致的研究，并着重研究了片层相对于外力轴的取向对PST晶体蠕变性能的影响。

The recovery stress rate of the TiNi alloy increases with increasing prestrain level, but that of the TiNiCu alloy decreases with increasing prestrain level.

对于TiNi合金，回复力随温度增长的速率随着预应变的增加而增加，而TiNiCu合金的回复力随温度增长的速率随着预应变的增加而减小。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷