钢

The carbonizing gear steel is one of the main structural steels for automotive purpose and the high strength gear steels,which the key automobile works are using in our Country are the foreign imported carburizing steels with various brands.

渗碳齿轮钢是汽车用主要结构钢之一，国内主要汽车生产厂家的高强度齿轮钢材料一直使用不同国家多个牌号的渗碳钢。

Through adopt the measure such as controling status of hot metal (for example content of carbon, content of oxygen, amount of converter slag, weight of hot metal etc.), depressing degree of vacuum promptly by driving vacuum pump ahead or increasing flow of nitrogen, controling correctly inserted deepness of duck, controling the time of decarburizing, process parameters of decarbonization for managing IF steel using RH—MFB equipment are optimized.

通过严格控制来钢条件，如碳、氧含量，转炉下渣量，钢水量；迅速降低真空室内真空度，采用预真空的压降模式，提高提升气体流量；保证浸渍管插入深度及脱碳时间等措施，优化了攀钢RH—MFB处理超低碳IF钢的脱碳工艺参数，取得了较明显的工艺效果。

ABSTRACT In order to study the thermally activated characteristics of plastic deformation and the effect of alloying element on the thermal activation of structural steels, the properties of plastic deformation for 20g and 13Ni3CrMoV steels have been examined in the temperature of 77—473K and strain rate of 〓. The experimental phenomena show that the effective stress of plastic deformation decreases with the increase of alloying elements content (namely solute solution softening) and the frequency factor deceases with the increase of effective stress.

本文以13Ni3CrMoV钢焊接结构的动态断裂破坏为背景，通过系统测试20g和13Ni3CrMoV钢的动态屈服特性，分析比较了结构钢的形变热激活特点，从频率因子〓随有效应力σ〓增大而下降和合金固溶软化的实验现象出发，在位错以弯折方式克服晶格Peierls位垒的基础上，提出了溶质原子与螺型位错热激活弯折相互作用的物理模型和σ〓-T分段线性关系的形变热激活理论假设，并借助计算机数值模拟，分析探讨了合金固溶软化的微观机制。

The measures adopted to reduce the content of oxygen in steel are introduced, such as catching carbon, raising rate of one-time turning down, lowering tapping temperature, controlling slag amount, white refining slag deoxidizing and etc.

介绍了石钢转炉厂为降低钢中氧含量采取的一系列措施，如高拉碳、提高一次倒炉率、降低出钢温度、控制下渣量、精炼白渣脱氧等，氧含量由2001年的50。

Immediately, like a blimp released from its moorings, the moon rose, hovering above the girls' heads, above the grandstand full of hoboes, and hung there, held by the steel net whose wires Diana and her friends were operating, sometimes pulling them, sometimes letting them out, and when the girls started to run, still holding the ends of the wires, the moon followed them.

几乎就在同时，月亮就像一个飞艇脱离了束缚一样立刻升上天空，在女孩们的头顶和满是流浪汉的前看台上空盘旋。月亮仍然被钢丝网包裹着挂在那儿，Diana和她的朋友们操纵着钢绳，有时拉紧有时放松，当女孩们抓着钢绳的末端开始跑起来的时候，月亮跟着前进着。

KBSF combines the stiffness of the concentrically braced steel frame and the inelastic behavior of moment-resistant frame, and overcomes the disadvantage of the eccentrically braced steel frame dissipating energy by immolating the main member. So it is an effective lateral load-resisting braced structure style which can apply in high intensity area.

KBSF综合了中心支撑钢框架刚度大和钢框架延性好的优点，并克服了偏心支撑钢框架牺牲结构主体构件屈服耗能的缺点，是适用于高烈度地震区的一种有效抗侧支撑结构形式。

Finally, through the instance of engineering, we can see that the steel dosage in steel honeycomb plank is smaller and the self-weight of the whole structure is lighter comparing with pyramided grid structure, and the steel dosage in portal strut with honeycomb laminated beam-column system is still smaller and the self-weight is still smaller comparing with steel I-beam,they will have a wide applied foreground.

最后，通过工程实例分析表明，在大跨度屋盖结构中，金属蜂窝板-杆空间结构体系比常规的四角锥网架结构具有用钢量低，结构整体自重轻等优点；在轻钢结构厂房中，采用金属蜂窝纯板片箱梁体系比一般H型钢结构用钢量更低，自重更轻，具有广泛的应用前景。

What do the terms "rimming steel"," fully killed steel"and "semi-killed steel" refer to?

这3个术语&沸腾钢&、&镇静钢&、&半镇静钢&指的是什么？

In the case of semi-killed or balanced steel, more deoxidation is carried out than with rimming steel, but not enough to completely "kill" the steel.

半镇静钢比沸腾钢脱的氧多，但又不至于使钢完全&镇静&。

Steel construction consisting of steel beams, columns, and trusses is extensively used for high buildings .

钢构造由钢梁、钢柱和钢桁梁组成。被广泛应用于高层建筑。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了