平板

This paper using the FEM software Marc, for the 50 and 60 degree V groove of flat plate butt joint simulate the one-layer and three layers welding, finish each welding and cooling it down to room-temperature then start the next welding true represent process and get the temperature field, residual deformation and welding residual stress, according to the theory analysis and empirical equation verified the temperature field and residual deformation all correct, comparison with experiment verified the welding residual stress regularity and correctly.

本文利用有限元软件Marc，对开60°和50°V型坡口的平板对接接头，动态的模拟了单层单道打底焊，焊完一道后让试件冷却到室温以及单层单道满焊，每焊完一道后让试件冷却，然后再焊下一焊道，道间温度≤200℃，在以此为初始边界条件下开始下一道的焊接，真实的再现了焊接过程，得出了温度场，残余变形和残余应力场的分布规律，根据理论分析及经验公式验证了温度场以及残余变形的正确性，角变形的大小，这些结果与数值计算相吻合。通过与实验测得的残余应力进行比较，验证了焊接残余应力的分布规律及模拟的正确性。

Such as the 12mm plate butt welded flat bottom closure φ3.2mm the electrode selection, welding current :80-85A, filling, cover the surface layer of the electrode selection φ4.0mm, welding current :165-175A, a reasonable choice welding current and electrode diameter, easy to control bath temperature, is the basis for forming weld.

如12mm平板对接平焊的封底层选用φ3.2mm的焊条，焊接电流：80-85A，填充，盖面层选用φ4.0mm的焊条，焊接电流：165-175A，合理选择焊接电流与焊条直径，易于控制熔池温度，是焊缝成形的基础。

A rare book,plant, butterfly ,ie one of only a few that exist

2至12英寸公称通径的蝶阀是无法兰类型，但都有平板型和吊耳型两种类型。

Vent filter flange coupling half of the gearbox casing surrounding the nipple plate washer, square cap or lid latch mechanism of contractile ring connected to the nipple weld Bush returned from aligning roller bearings groove ball bearings self-align.roller Allen screw and thrust bearing ...

耦合一半围绕法兰发泄滤波器变速箱外壳乳头平板垫片，正方形帽或盖子收缩环连接闩机制布什焊缝对乳头返回自调心滚子轴承槽球轴承自我align.roller推力轴承艾伦螺丝与。。。

Vent filter flange coupling half of the gearbox casing around the nipple plate gasket, ring contraction of a square cap or lid latch mechanism for connecting weld nipple Bush returned from aligning roller bearings groove ball bearings self-align.roller Allen screw and thrust bearing ...

耦合一半围绕法兰发泄滤波器变速箱外壳乳头平板垫片，正方形帽或盖子收缩环连接闩机制布什焊缝对乳头返回自调心滚子轴承槽球轴承自我align.roller推力轴承艾伦螺丝与。。。

But his visionary predictions have not always led to commercial success, as in the case of the touch-screen tablet computer.

但并不是每一次盖茨的梦幻预测都能转换成商业利润，就比如他的触控平板电脑设想，就没有获得成功。

Our company produce all kinds of high, medium and pressure series valve, valve, check valve, valve plate, high pressure oil wellhead equipment, slurry pipe sinks, cutting Meeting Series snubbing pipe, casing head and drilling accessories such as petroleum, chemical industry equipment.

公司主要生产经营各类高、中、压系列闸阀、截止阀、止回阀、平板阀门、高压采油井口装置，泥浆管汇、节流压井管汇系列、套管头及钻采配件等石油、化工行业专用设备。

Both ends of the wear cap maintenance: Gear pump with cast iron end caps, wear phenomenon occurs after a slight revision in the plate mill level, more serious wear and tear on the grinding surface grinding machine should be revised in the flat.

两端盖的磨损维修：齿轮泵的端盖用铸铁制造，出现磨损现象后，轻微的可在平板上研磨修平，磨损比较严重时应在平面磨床上磨削修平。

Urban systems generally use a large number of low-pressure valve, and to environmental protection and development of energy-saving, that is, by the use of low pressure over the last steel valve towards environment-friendly plastic valve, balance valve, metal sealed butterfly valve and the center line butterfly valve seal transition, oil and gas to the pipeline of development projects, which in turn requires a large amount of flat gate valve and ball valve

2城建系统一般采用大量低压阀门，并且向环保型和节能型发展，即由过去使用的低压铁制闸阀逐步转向环保型的胶板阀、平衡阀、金属密封蝶阀及中线密封蝶阀过渡，输油、输气工程向管道化发展，这又需要大量的平板闸阀及球阀

The parallel plate flow chamber apparatus was established to study the relationship between the endothelin metabolism of capillary endothelial cells and duration of shear stress action.

应用平行平板流动腔装置研究毛细血管内皮细胞内皮素代谢与剪切作用时间的相关关系。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。