管内的

In order to research the flow mechanics inside tube inserted with twisted-leafs discontinuously,a mathematical model for turbulent flow resistance was developed,and the influence of the twist angle α and the swirl angle β on the form drag was analyzed by numerical simulation.

为了研究管内间隔插入旋流片的流动机理，建立了流阻数学模型，通过数值模拟分析了旋流片的旋转角α和旋流角β对j(形体阻力与摩擦阻力的比值)的影响。

This study presents the investigating of microchannels flow. It is divided into two parts, the flow characteristics of micro venturi and the performance of straight-walled and curved-walled micro nozzle/diffuser respectively. The experimental results are also compared with the simulation results whereby we can observe the flow field in micro venturi and discuss the bounder effect of micro nozzle/diffuser.

本文主要是针对微喷嘴的空气流场进行研究与探讨，研究分为两部分进行，分别是探讨微文氏管的流力特性及曲面微喷嘴边界对流力效能的影响，并将实验结果与CFD软体的分析结果相互比较，藉以观察微文氏管内之流场分布并探讨微喷嘴较佳之流力性能。

In the model the collector is regard as a system, the outlet temperature is the system output, the other variables: the inlet temperature, the ambient temperature and the solar irradiance on aperture plane per unit area are the system inputs.

中文摘要本文以U型管全玻璃真空管太阳集热器为研究对象，在分析太阳集热器传热机理和管内流体温度分布情况的基础上，根据能量平衡和传递函数理论，对侯宏娟的集热器动态测试方法的数学模型进行改进。

The numerical results of flow resistance and heat transfer agree well with experimental data.

用试验的方法确定了油焦浆管内等温流动的流动阻力计算方法和在搅拌加热器中传热努歇尔数的计算方法。

Secondly, the results of heat pipe experiments show that when the experimental sets of LED illuminator of LED was used in horizontal angles, resulting in the heat pipe which fill 2.52g water volume have the best thermal properties than others.

第二个研究之 LED 散热模组的实验结果显示，在水平使用时以2.52g水量为最佳，以本实验 27W的 LED 热源功率为例，热源区可维持在50℃左右的平衡温度，而当管内水量高於2.52g时皆有蒸气堵塞现象使热源区温度上升。

The device includes a drill spigot inserting into the marebase sand layer through the upper cover soil layer, there sets air inlet, sand discharging pipe and vibration connecting pipe in the drill spigot; there sets a sand absorption head on the bottom of the air inlet and sand discharging pipe; the bottom of the vibration connecting pipe connects with the vibration head; the sand absorption head is made up of a centre cavity, ring cavity and sand absorption pipe.

该装置包括一穿透上部覆盖土层插入到海底深埋砂土层的钻孔套管，在钻孔套管内，设有进气管、排砂管和振动连接管；进气管和排砂管的下端连接一个吸砂头；振动连接管的下端连接振动头；吸砂头由一中心腔室、环状腔体和吸砂管构成。

Because of the effects of particle posterities and gas distributor, there is another particular axial distribution of cross-sectional averaged solids holdups, in which the averaged holdups increase first and then decreases along the riser height.

采用间隙指数定量描述了气固混合程度，结果表明整个提升管内没有形成很明显的絮状物，局部流动比较稳定；在相同Gs1.2/Gg2.0条件下，间隙指数在确定的提升管截面上有较为一致的径向分布规律。

Objective To study the effect of dexamethasone on degradation of longlived protein in myotubes and to elucidate its possible mechanism.

目的 研究地塞米松对体外培养的骨骼肌肌管内长寿命蛋白降解的影响及其可能的作用机制。

K|-HnYpq0 Objective To study the effect of dexamethasone on degradation of longlived protein in myotubes and to elucidate its possible mechanism.

目的 研究地塞米松对体外培养的骨骼肌肌管内长寿命蛋白降解的影响及其可能的作用机制。

The quantitative relational expression between the coefficient of pressure loss and the Froude number is obtained.

通过研究得出了输送管内废塑料颗粒压力损失系数与弗劳德准数的定量关系式，废塑料颗粒速度与单位管长压力损失的关系，以及水平弯管和垂直上升弯管中颗粒速度与单位管长压力损失的关系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。