钢结构

The roof of the ground traffic center of Capital Airport is a transmeridional disciplinary arch truss structure.

摘要］ 首都机场地面交通中心的双曲面钢屋盖采用东西走向有规律的单向拱架结构。

Structure of the surface of the main beam unblasted with gussstanhlwerke node.

结构面主梁交接处采用铸钢节点。

The synergistic effect of Cu and Mn is listed as follows:(1) On improving the structure of rust layer, addition of Cu and Mn can reduce cracks and pores in rust layer;(2) On altering the composition of rust, it can increase the amount of Fe3O4 and γ-FeOOH, while decrease that of β-FeOOH;(3) On the chemical state of alloying elements and selectivity of rust layer, it mainly convert the anion selectivity to canoed selectivity;(4) On the electrochemical aspect, it can decrease the anode current density and increase the corrosion potential of steel.

Cu、Mn的协同作用主要体现在以下几个方面：在改善锈层结构方面，主要是减少锈层中的裂纹与孔洞，提高锈层与基体的结合强度；在改变锈层组成方面，增加Fe3O4和γ-FeOOH的含量，降低β-FeOOH的含量；在元素化学状态与离子选择性方面，促使锈层由阴离子选择性转变为阳离子选择性，抑制Cl-的渗透；在电化学方面，大幅度降低阳极电流密度，提高钢基体的自腐蚀电位。

The effects of ion implanting W and carbonizing on the microstructure and surface performance of low carbon structural steel were investigated.

研究了离子注渗W和渗碳处理对低碳结构钢显微组织、表面性能的影响。

Cheesed head studs for arc stud welding are largely applied in bridges, reinforced concrete for high buildings and industrial buildings, cover fixture of heave duty ships, boiler pipe welding, inserts fixture for boiler pipe and other special purposed containers.

电弧螺柱焊用圆柱头焊钉系列产品主要用于桥梁、高层建筑及工业厂房的钢-混凝土结构，大吨位船舶各种孔盖的固定，锅炉管道的螺柱连接、锅炉管道的散热及储罐、槽车等各种容器特殊衬里的固定。

Even though helium atoms are four times chunkier than hydrogen atoms, they are still small enough to find all the weak spots as they worm their way through the crystalline structure of solid steel several centimetres thick.

即使氦原子比氢原子的体积大四倍，当他们缓慢的通过几厘米厚的晶体结构的脱氧钢时，它们还是足够的细小能检查出所有的裂缝。

Microstructures and inclusions in Si-Mn-Ti deoxidized steel s subjected to furnace cooling were investigated.

对硅锰钛脱氧钢炉冷条件下的微观结构和夹杂物进行研究。

When the partial composite beams are loaded, the interface of steel and concrete would generate slips. The slips make the assumption of plane cross section disaccorded and decrease the stiffness, so stress and deflection are affected by the slips rather deeply.

部分剪力连接在承受外荷载时，钢与混凝土的交界面上会产生滑移，而滑移使组合截面不符合平截面假定，结构的刚度也会减小，因此截面应力和挠度变形受滑移的影响比较大。

Nanocrystalline nickel coatings were prepared by pulse jet electrodepositing on the substrate of 45 carbon steel.

采用脉冲喷射电沉积方法在45钢基体表面制备了纳米镍涂层，用扫描电镜和X射线衍射仪研究了平均电流密度对镍涂层表面形貌、微观组织结构及平均晶粒尺寸的影响，并进行了耐腐蚀性试验。

Study on phases of boronized coating on chromium electroplated carbon steel.

45钢表面镀铬渗硼层的相结构分析。

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。