管

Referring to Bessel function,a calculation equation of temperature distribution in the surface and heat-flow density of wax deposit layer in the laminar flow is deduced,as well as temperature distribution inside.

通过对试验环道上测试段相关数据的测试，对比分析测试段管壁有沉积物和无沉积物时测试段管壁内温度分布的不同表达式，根据能量方程建立了无量纲温度分布方程，利用贝赛尔函数推导出原油在层流状态下沉积层表面温度分布、沉积层热流密度、油流温度分布等相关温度场的计算公式，为研究蜡沉积规律，定性分析管路结蜡层厚度和制定合理的清管方案奠定了理论基础。

Analysis compared with different expression of temperature distribution on deposition and non-deposition in the tested inside-wall of pipeline,a nondimensional temperature function was founded to get a conclusion according to energy equation.Referring to Bessel function,a calculation equation of temperature distribution in the surface and heat-flow density of wax deposit layer in the laminar flow is deduced,as well as temperature distribution inside.This method provides a theoretic basis on the theory law o...

通过对试验环道上测试段相关数据的测试，对比分析测试段管壁有沉积物和无沉积物时测试段管壁内温度分布的不同表达式，根据能量方程建立了无量纲温度分布方程，利用贝赛尔函数推导出原油在层流状态下沉积层表面温度分布、沉积层热流密度、油流温度分布等相关温度场的计算公式，为研究蜡沉积规律，定性分析管路结蜡层厚度和制定合理的清管方案奠定了理论基础。

Power-law fluid is used to describe the Non-newtonian rheological property of the produced fluid in a polymer-driving well; the governing equations, boundary and initial equations of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is established in bipolar coordinates system; formulas of instantaneous flow rate and stress distribution on the outwall of the inner cylinder of the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially are established.

在理论上，用幂律流体模型描述了聚合物驱油井产出液的非Newton流变性；建立了双极坐标系下幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了双极坐标系下幂律流体在内管做轴向往复运动的偏心环空中流动时瞬时流量和流体在内管壁上的压力分布计算公式。

Experiments showed that mixing property in pipe fluidized bed with relative distance of blowpipe equal to 3.2 is better than that of traditional platefluidized bed.

结果表明，当布风管间距与布风管外径比为3.2时，管式布风流化床比板式布风具有更好的混合效果。

Experiments showed that mixing property in pipe fluidized bed withrelative distance of blowpipe equal to 3.2 is better than that of traditional platefluidized bed.

结果表明，当布风管间距与布风管外径比为3.2时，管式布风流化床比板式布风具有更好的混合效果。

The phonon dispersion curves of single wall boron nitride nanotubes were calculated.

计算了单壁氮化硼纳米管的声子色散关系，给出了扶手椅管和锯齿管拉曼和红外活性模的频率随管径的变化规律。

Temporarily catheterization pulls out inside 24 H ureter, if undertake uric education or acute retention of urine wait,adopt temporarily catheterization; leaves buy catheterization to be in clinical on common, ureter needs to leave above of buy 24 H, urethral mouth is daily want clean disinfection 2 times, daily change 1 times; keeps bag of collect make water or drainage bottle the person that buy catheter exceeds 7d, change every week ureter 1, with 0 · normally according to the circumstance of fluid of eduction make water 9% physiological saline undertake bladder is rinsed. 2 common problems patient of a few males is opposite circumstance of the psychogenic disorder when 1 catheterization of 2 · nurse catheterization produces psychogenic disorder, often be flushed, next abdomen and perineal ministry muscle are nervous, shadow fugleman make water goes on wheels, impact of urgenter to the illness patient psychogenic disorder is not big, ache and bladder are bouffant the mood that held them, catheterization process is more successful. 2 · 2 see the phenomenon is cracked below road junction of female patient make water occasionally 20 old clinical nurse in the job, the female cracks a circumstance to see 4 below urethral mouth.

临时导尿在24 h内拔除尿管，如进行尿培养或急性尿潴留等采取临时导尿；留置导尿在临床上常见，尿管需留置24 h以上，尿道口每日要清洁消毒2次，每日更换集尿袋或引流瓶1次；留置导尿管超过7d者，每周更换尿管1次，根据排出尿液的情况通常以0·9%生理盐水进行膀胱冲洗。2常见新问题2·1导尿时心理障碍情况一些男性患者对护士导尿产生心理障碍，往往面红耳赤，下腹部及会阴部肌肉紧张，影响导尿顺利进行，对于病情较急的患者心理障碍影响不大，疼痛和膀胱鼓胀占据了他们的情绪，导尿过程较顺利。2·2偶见女性患者尿道口下裂现象20多年的临床护理工作中，女性尿道口下裂情况见4例。

Is a professional manufacturer of various plastic PC pipe, PC Profile, LED guardrail lamps manufacturer of plastic accessories; products are mainly used in road and bridge parapets lights casing, bridge lamp casing, building outside the outline of outer tube lights, stage lights outer tube, urban lighting decoration works.

是一家专业生产各种塑料PC管、PC异型材，LED护栏灯塑料配件的生产厂家；产品主要用于路桥护栏灯套管、桥梁灯套管、大厦外轮廓灯外管、舞台灯外管，城市亮化装饰工程等。

This article introduces the microporous three-dimensional small-opening structure sintered by powder material, discusses the hydraulics characteristic of the narrow passage in the microporous material and the bubble chamber theory and expounds the general 1/3～1/7 empiric rule.

介绍了由粉末状材料烧结而成的微孔管三维孔隙结构，研究了PE烧结管三维孔隙之间的关系，并探讨了微孔管介质内细孔道的水力学特性和泡室理论，对通用的1／3～1／7经验规则进行了解释。

It introduces Survey control network pattern choice and its arrangement, cross river water level datum survey, single shaft orientation during pipe jacking for cross river cable tunnel at FuXing Road East, as well as design and application of Xiong Ying pipe jacking automatic survey guiding system applied in vertical curvature pipe jacking survey.

提 要：本文介绍了复兴东路220kV电缆越江隧道顶管工程施工测量中控制网的选形与布设、跨江水准测量、单井定向，以及雄鹰顶管自动测量引导系统在竖曲线顶管测量中的设计与应用，对类似作业及相应的工业软件开发极具参考价值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。