查询词典 tube

In this paper, the stress and strain distribution, tube wall thinning and the cross section ovalization in Aluminum alloy thin-walled tube NC bending with small bending radius have been investigated through experimental method combined with finite element method and theoretical analysis.

本文采用实验法，并结合有限元模拟和理论解析法，研究了与铝合金薄壁管小弯曲半径数控弯曲成形质量密切相关的应力应变分布、壁厚变化和截面畸变等关键问题。

The purpose of this paper is to use the endochronic theory combined with the principle of virtual work to simulate the mechanical behavior (the relationship of bending moment, curvature and ovalization) of two different circular tubes, namely a SAE-4130 low-alloy steel tube and a 7075-T6 aluminum alloy tube, subjected to cyclic bending.

本文是将内涵时间理论结合虚功原理延伸去描述两种圆管，SAE-4130低合金钢管及7075-T6铝合金管，在循环弯曲负载下所呈现的力学行为（弯矩、曲度及椭圆化关系）。

The results show that increasing the ball numbers and mandrel extension length may reduce the ovalization, but leads to more remarkable wall thinning; the ovalization becomes more severe with the larger bending angle; the smaller the relative bending radius, the larger the ovalization is; the ovalization and wall thinning degrees are both smaller in the case of pressure die with dry lubricant; and under the same bending condition, the ovalization of LF2M tube is larger than the one of 1Cr18Ni9Ti tube.

结果表明，增加芯头个数与芯棒伸长量都能减小弯管的截面畸变，但两者都导致弯管壁厚减薄量增大；随着弯曲角度的增加，截面畸变越严重，相对弯曲半径越小，无芯棒与芯头支撑段弯管的截面畸变愈严重；在压块无润滑情况下，弯管的截面畸变和壁厚减薄量都小，并且在同等弯曲条件下，1Cr18Ni9Ti弯管的截面畸变小于LF2M弯管。

Results:There were no abdominal pain and fever,jaundice faded away gradually postoperation.Biliary drainage was 300ml-1000ml/d more or less.Colour of bile changed into normal by degrees.Intra peritoneal drainage was open and the colour was light bloody.Amount of drainage dropped off day after day.Whole blood cell test, serum glutamic pyruvic transaminase,serum glutamic oxalacetic transarninase,total serum protein,serum albumin and serum globulin returned to normal in first week postoperation.Serum bilirubin,serum glutamyltranspetidase and serum alkaline phosphatase declined gradually in first week postoperation.T-tube was clipped at twelfth day postoperation.T-tube Cholangiography was clear at 24~ day postoperation.

结果：术后无上腹部绞痛、高热，黄疸逐渐减退，每日引流胆汁300ml-1000ml不等，由淡黄色混浊、内有胆泥过渡到金黄色清亮的正常胆汁，腹腔引流通畅，引流液为淡红色，量从最初的200ml迅速过渡到10ml，血常规、血清谷丙转氨酶、谷草转氨酶、总蛋白、白蛋白、球蛋白等1周内均恢复正常，血清总胆红素、直接胆红素、间接胆红素、谷氨酰转肽酶、碱性磷酸酶逐渐下降，术后12d夹闭T管，术后24d T管造影提示左、右肝管及胆总管下端通畅，无狭窄。

Then, concerning the difficulty of ascertaining hysteresis time of piezometric tube, Genetic Algorithm-Radial Basis Function Neural Network model is developed according as the method that reservior level is rectilinear correlation with piezometric tube level, which not only could be calculated by computer but also is showed logical and feasible.

针对以往监测模型预测精度难以保证的的问题，本文在分析比较了几种土石坝安全监测预报模型的基础上，提出了一种新的安全监测预报模型——遗传回归模型，该模型通过遗传染色体对建模因子进行优选，并在适应度函数中综合考虑模型拟合精度与预测精度平衡。

The saturation equals 1 in saturated region.The piezometric tube waterhead equals position head by neglecting the effect of capillarity in unsaturated region.So the nonlinear parabolic equation of seepage flow will degenerate to Laplace equation about piezometric tube waterhead in saturated region and convective equation about saturation in unsaturated region respectively.

将渗流域分为饱和区与非饱和区，为避免研究复杂的多相流问题，可以认为非饱和区是与大气相通的，则测压管水头中的压力与大气压相等，使测压管水头等于位置水头，从而渗流控制方程在两个区域中分别退化为关于测压管水头的拉普拉斯方程和关于饱和度的对流方程。

Stamens inserted at base of corolla tube; filaments connate into a tube; anther appendages incurved; pollinia 2 per pollinarium, pendulous.

雄蕊花冠筒的着生的在基部；花丝合生成筒；花药附属物弯曲；花粉块2 每pollinarium，下垂。

A single-stage and high power pulse tube cooler working between 20~40 K has been designed and constructed in order to precool the second stage of a 4 K separate two-stage pulse tube cooler.

为了满足液氦温区分离型二级脉管制冷机第二级预冷的需要，设计制作了1台20～40K温区单级大功率脉管制冷机。

The results show that the single-layered neural tube fails to form and the neural crest cells remain at the lateral regions in the explants with NTDs. However, the patterning of the neural tube is not affected as indicated by the normal expression of the preneural genes.

结果显示神经管闭合缺陷的移植体不能形成单层化的神经管，并且神经晴细胞滞留在侧面区域不能向背侧中线迁移，而对神经前体标记基因的检测显示神经管的背腹图式形成并未受到影响。

The results indicate that there are vortexes, shocks and expansion waves outside the multi-tube PDE. In addition, the results might be referrible to research the characteristics of the flow-field outside multi-tube Pulse Detonation Engine.

计算结果表明，此多管脉冲爆轰发动机黏性外流场中存在旋涡及多道相互作用的激波与膨胀波，该结果对多管脉冲爆轰发动机外流场特性研究具有一定的参考价值。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新