查询词典 casing head

There are lots of testacean aquatics attached to the underwater concrete surfaces of the spiral casing and draft tube in Shaxikou hydropower station.

沙溪口水电站水下蜗壳及尾水管混凝土表面附着较多的贝壳类水生物，水下混凝土侵蚀严重，影响水工建筑物的安全运行。

We also have a joint-venture factory for production of OCTG threader protectors, with annual production capability of one millions pairs of threader protectors for casing, tubing, line pipe, drill pipes.

公司此外还经营直缝埋孤焊、高频电阻直缝焊、螺旋焊等焊接石油天然气输送管，为国外用户代理采购钻机、修井机、抽油机、测井设备、顶部驱动钻井装置、泥浆泵、特车、固控设备、井口工具等产品。

5The method of roof bolt anchor and slip casing is proposed which is applied in controlling surface and building toft settlement.

5提出了应用锚杆锚固法和注浆加固法方法进行露天矿高陡岩质边坡地表、建筑物地基沉陷治理。

By analysing and calculating the variations in distribution of axis direction contact force and contact pressure on screw thread, the influence of errors of pitch and taper of casing screw threads to the properties of resisting pull and sealing liquid and gas are studied. Based on the result obtained through analysis, a reasonable tolerance distribution for pitch and taper is proposed.

最后，本文通过分析计算内外螺纹不同的螺距、锥度参数配合时，轴向载荷及接触压力在螺纹上分布的变化，研究了套管螺纹的螺距、锥度参数误差对套管螺纹接头的拉伸和密封性能的影响，并依据分析结果提出了二参数公差带的合理分布。

A simulated burnt piece of coal or wood, usually a plastic casing having a wood-like or coal-like coating, with a light source mounted therein, and a strip of cloth having a shape of fire flames billowed above the simulated burning medium by blowing wind. A vision of jiggling fire flame may be viewed through a partially translucent screen made of plastic.

现有的电壁炉火焰模拟装置中，一类装置为模拟煤炭或树枝状碳块的燃烧介质，通常这些燃烧介质由表面涂有树枝状木材颜色的塑料壳体替代，里面装有一组灯泡光源，来模拟燃烧树枝状木材时的效果，再用一组火焰形状的丝绸布料飘带悬挂在燃烧介质上方，通过空气的吹动来带动飘带飘动时的投影效果，通过半透明的塑料屏幕与镜面玻璃，可以看到火焰闪动的视觉景象。

energy method, flexural equation, trigonometric series equation, casing string flexural de-form, directional well

因此。文献[3]在此基础上，将套管柱当作既受横向荷载又受轴向力作用的梁来考虑，使套管柱的受力模式

Aviation products: for domestic Yun-7 turboprop airliner matching 5 A -Ⅰ-type engine, turboprop engines 5E and direct 9 helicopter transmission system, Direct 8 helicopter reducer, direct transmission of 11 helicopters, as well as m 8 helicopter engine repair, as well as domestic and international aero-engine crankshaft, connecting rod, casing, such as subcontracting production projects, as well as aircraft landing with 3000kw gas turbine generator sets and so on the ground.

航空产品：为国产运7客机配套的涡桨5甲－Ⅰ型发动机、涡桨5E型发动机和直9直升机传动系统、直8直升机减速器、直11直升机传动系统等，还有米8直升机发动机修理以及国内外航空发动机曲轴、连杆、机匣等转包生产项目，以及航机陆用3000kw地面燃气轮机发电机组等。

Analysis on contact and connection behavior of casing thread joints shows that the performance of thread plays a important role on the connection between turnbuckle and steel rod.

通过对钢棒螺纹连接的接触有限元分析，发现螺牙性能对钢棒的连接性能有着重要的影响。

An air cleaner unit includes a filter element disposed in a casing for filtering air to be introduced into an internal combustion engine of a vehicle.

一种用于内燃机的空气净化器单元，包括设置在外壳中的过滤元件，所述过滤元件用于过滤引导到车的内燃机中的空气。

This ensures positive connection and the use of preferred elements (30) which extend from one set of latches through the outer casing of the second tube; means can be provided to readily unlatch the tubes.

这样确保连接牢固，最好采用元件（30），它能够从一套锁定装置穿过第二根管的外壳伸出；还设有能够容易解脱管子的装置。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。