查询词典 welded tuff

The results showed that the fracture toughness of the weld of HFW pipe was lowest.The value of absorbed energy of HFW weld was closely related to the heat treatment process.But the fracture toughness of fusion zone of submerged-arc welded jointer,its microstructure was coarse granular bainite,and was lower than the other locations of heat affected zone;and with the increasing of steel strength,the effect of welding heat cycles on the pipeline steel became stronger,and form coarse microstructure in fusion zone leading to decrease fracture toughness.

结果表明，高钢级管线钢高频焊接焊缝处的断裂韧性最低，其冲击功大小与热处理工艺密切相关；而埋弧焊接热影响区断裂韧性在熔合线处最低，其主要原因是此处的组织为粗大的粒状贝氏体，而且强度越高焊接热循环对管线钢的作用越强，在熔合线附近更容易产生粗大组织，使断裂韧性降低。

Using metallographic analysis, original structure and surface deficiency were obtained, the influence of the structure on corrosion speed was settled, the surface macrography patterns of welded joint in different temperature and concentration were got. Microscopic patterns after corrosion in different condition were gained by SEM, though which the influence of temperature, concentration and structure on corrosion was easily observed.

采用金相分析法，不仅获得了腐蚀前焊接接头的原始金相组织以及表面缺陷，确定了组织及缺陷对腐蚀速率的影响，而且得到了焊接接头在不同温度、浓度条件下腐蚀后的宏观形貌，采用场发射扫描电子显微镜得到了焊接接头在不同条件下腐蚀后的微观形貌，从而直观地得到了温度、浓度以及组织对焊接接头腐蚀速率的影响。

The macrostructure of the friction welded joint and the microstructure of welding area was examined and analyzed, it was found that the simulation results agree well with the experimental results.

对接头的宏观形貌和焊缝区的微观组织进行观察分析，发现模拟结果与实验结果吻合较好。

The newly developed products: welded joints, male connector, such as gas and natural gas pipelines and accessories.

新开发的产品有：焊接接头，螺纹接头等煤气，天然气管道配件。

According to the maximum likelihood method inferred, the fatigue test of the incomplete penetration welded joint s was conducted, and the P S N curves were obtained.

按照得到的极大似然方法，进行了含未焊透缺陷接头的疲劳试验，得到了相应的P S N曲线。

One point method, mean square curve method and the maximum likelihood principle to predict P-S-N curve for welded steel structures for arbitary survival rate are presented.

本文建立了任意存活率下焊接钢结构P-S-N曲线预测的一点法，均方差曲线法极大似然法。

And it is a real blessing welded wire mesh to others.

爱是对他人真挚的祝福。

Confederate design; mill fit by hand; tig welded; mainframe:.120 gauge wall thickness dom carbon steel; 3" od backbone; 2" od down tube; 1 1/4" od cradle; 1" x 2 rectangular strut; elongated neck.

邦联设计；适合磨手；tig焊；主机：0.120了解dom的壁厚碳钢；3"外径骨干；2"外径管下来；11/4"外径摇篮；1"×2直角支撑；长脖子。

The welded joints in the analyses were generally accepted as failure –free and the joint transiton regions included in the calculations are negligibly small.

被焊接的关节在那通常分析自由地被认为是失败–而且被包含在计算之中的联合 transiton 区域是 negligibly 小的。

Gaseous NF3 containing 0.1% or less active fluorides was found to be noncorrosive toward several different parent and welded metal specimen s.

含有0.1%或更少的活泼氟化物的气态NF3被发现对于几种不同的母材和焊接金属试验品是没有腐蚀性的。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。