轴管

Experiments have been performed, in which heat-mass transfer analogy and the naphthalene sublimation technique were used, to investigate the local and overall heat transfer characteristics and flow behaviors of an elliptic cylinder of axis ratio 1 6∶1 in crossflow of air.

利用热质比拟原理及萘升华技术对空气横掠半轴比为 1 。6/1 。0椭圆管的局部及平均换热特性以及流阻进行了实验研究。

In addition, spermiogenesis includes chromatin condensation, migration of the cytoplasm and mitochondria to the caudal pole of the nucleus, formation of a moderate axial nuclear fossa containing the proximal centriole and part of the distal centriole and presence of a short cytoplasmic canal separating mitochondria from the flagellum.

另外，精子发生过程中还包括染色质浓缩，细胞质和线粒体向细胞核的尾端迁移，在核的后端中轴位置上形成中等大小的核后凹，近端中心粒和远端中心粒的一部分嵌在核后凹之内，短的胞质内陷管将线粒体与鞭毛分隔开。

Remove the gasket seal on the plane of lower barrel, then remove clevis pin and cotter pin on the rod

移除地下埋管平面上的密封垫圈，拆除连接套上的销轴和开口销，然后拆除上阀杆。

Place gasket seal on the lower barrel, install upper valve rod and rod coupling, fixed by clevis pin and

把密封垫圈放在地下埋管上，安装上阀杆和连接套，用销轴和开口销固定住。

But ECT technology has the following characteristics: 1 the measured capacitance and its change induced by the measured material concentration variation are very small, but the stray capacitances of co-axial screening cable and CMOS switches are relative very large, so the capacitance detecting is easily affected by the stray capacitances, 2 the electric fields in the sensors detecting region is affected by the permittivity distribution, non-uniformity of the space responsive sensitivity is very high, and the image reconstruction is undetermined.

但由于ECT技术中，首先所检测的微电容量及其因物流相含率的变化所引起的变化量很小，而由相关的连接同轴屏蔽电缆与切换CMOS开关所引入的杂散电容远远大于测量电容，微电容的测量容易受杂散电容等的影响；其次，多电极电容传感器测量区内的电场受介质分布的影响，且测量区内的空间响应灵敏度极不均衡，其影响图像重建的不确定性；其三，ECT中的图像重建，由于其是一个欠定问题的求解，在迭代求解方法中，迭代的初值影响迭代过程收敛到近似解的速度；其四，对于气/固两相流应用而言，由于ECT系统在线标定的难以实现，管壁磨损等因素的影响制约该技术应用于生产工艺中气/固两相流的长期连续检测。

After that, we analyzed with special emphasis of the slow wave structures with a coaxial structure inside it.

该部分的工作主要是与下文的一种具有优异性能的同轴波纹返波管进行比较。

This technique is simple and can adjust the concentricity very well.

该技术简单，能很好地提高高频毫米波管装配中的同轴度。

A laser alignment system can measure and adjust the concentricity from cathode to rf circuits.

文中采用的解决方法是使用He-Ne激光器测量从阴极到磁聚焦管的不同轴度，并在最终的装配前用机械调整结构校正。

This test result is consistent with the numerical results for gradually-contracted non-coaxial pulse tube refrigerator.

这一实验结果的发现与非同轴渐缩型脉管性能的数值分析结果在定性上完全一致。

The sample spectra were obtained with the cuvette holder in-line between the fibers.

样品光谱是通过将小型管固定器与纤维之间同轴的方式获得的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。