钢结构

Metallograph Diagrams for Structural Steels,Beijing Mechanical Industry Press, 1995a

结构钢金相图谱，北京：机械工业出版社

Silica coating was prepared by atmospheric pressure chemical vapor deposition taking HP40 steel plate as substrate,tetraethyl orthosilicate as silica source,and air as carrier gas and diluent.

以正硅酸乙酯为硅源物质、空气为载气和稀释气，采用常压化学气相沉积法在HP40钢表面制备了SiO2涂层；采用扫描电子显微镜和能量色散能谱表征了SiO2涂层的组织结构和表面形貌；考察了在乙烯裂解的工艺条件下SiO2涂层的结焦抑制能力。

Ever since the first proposal of the presence of β\|Fe in 1885 by Osmond, a great debate on the cause of quench hardening of steels was going on until 1922 when Westgren and Phragmén disproved the presence of β\|Fe by high temperature X\|ray diffraction analysis.

自从Osmond在 1885年首次提出β Fe以为，直到 192 2年Westgren和Phragm啨n用高温X射线衍射证明β Fe与α Fe有相同的体心立方结构为止，在很长时间内，冶金学家一直为钢为什么在淬火后变硬而争论不休。

Keywords:moment-resisting steel frames; structural influencing coefficient; ductility; overstrength; inelastic time history analysis

关键词］抗弯钢框架；结构影响系数；延性；超强；弹塑性时程分析方法

The effect of segregation of elements on the structure ofsemikilled low alloy steel ingot, taking into consideration the peritectic reaction.

枝晶凝固过程中元素对半镇静钢钢锭结构的影响。由此选择冶炼控制成份。

The Shi zi mountain rock tunnel which connecting the Punan expressway and the Nanping city in Fujian province were taken as engineering background. Associating plentiful of field test data of vibration velocity with the finite element numerical simulation which based on MIDAS/GTS software, the blasting vibration behavior of the precedence tunnel in the Shi zi mountain rock tunnel was studied. For further, the effects that lining support systems with variation parameters, such as the length, the distance and the length of rockbolts, the spacing of steel braces, the thickness and reinforcement quantity of the secondary lining,,on the blasting vibration behavior of the precedence tunnel were systemlly discussed.

论文以福建浦南高速与南平城区连接线狮子山隧道为工程依托，通过大量的现场振速测试和基于MIDAS/GTS软件进行的三维动力有限元数值模拟，对狮子山隧道先行隧道的爆破振动特性进行了系统研究，并在此基础上进一步探讨了不同衬砌结构参数，如锚杆长度、钢格栅间距、二衬厚度和二衬配筋量等对先行隧道爆破振动特性的影响。

In order to improve the accuracy of spectrochemical analysis of high speedsteels, a systematic study of the effect of different excitation conditions and di-fferent micro-structures of the samples on the accuracy of analysis has been made.

为了提高高速钢光谱分析的准确度，在本文中比较系统地研究了激发条件和样品的组织结构对于准确度的影响。

These CRM's are for analysis of carbon structure steel by spectrochemical methods.

此类标样用于碳素结构钢的光谱分析。

High speed steel,ion sulfurization,nano structure,friction and wear behavior

中文关键词：高速钢，离子渗硫，纳米结构，摩擦磨损性能

Sulfide layer was made on the surface of high speed steel (W6Mo5Cr4V2) by means of low temperature ion sulfurization. The tribological properties of the sulfide layer under dry sliding were investigated on an MM 200 friction and wear test rig. An atomic force microscope and a scanning electron microscope equipped with an energy dispersive spectrometer attachment were adopted to analyze the morphologies and compositions of the original and worn surfaces of the sulfide layer. The phase structure of the sulfide layer was determined by X ray diffraction.

采用低温离子渗硫工艺在 W6 Mo5 Cr4 V2高速钢表面制备了硫化物固体润滑层，在 MM- 2 0 0型摩擦磨损试验机上对渗硫层的摩擦学性能进行了干摩擦试验研究，用原子力显微镜及扫描电子显微镜和 X射线光电子能谱分析渗层表面、截面、磨面的形貌及成分，用 X射线衍射仪分析了渗硫层相结构。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。