在腔中的

The transient natural convection and natural convective heat and mass transfer under constant-flux condition were also studied respectively. In experimental research, the electrochemical method was used to analogize natural convection in a porous enclosure.

在实验研究中，采用电化学方法，在多孔介质封闭腔体的两竖壁间建立浓度梯度和温度梯度，实验测量了腔体内的温度分布和电极间的极限电流，以此确定了总体的传热系数和传质系数。

Correctional checking formula of melt flow ratio in injection molding was obtained by introducing a correction coefficient β which reflected the complexity degree of mold cavity. The results show that, the maximum flow ratio of 486 can be obtained when injection pressure ranges from 150 MPa to 160 MPa in Archimedes spiral mold for PP, while maximum flow ratio of 419 can be obtained when injection pressure ranges from 160 MPa to 170 MPa for PE. There is a local fluctuation phenomenon for flow ratio and corresponding injection rate in square spiral mold when injection pressure of 100, 120 and 150 MPa for PP and 130, 140 MPa for PE are reached respectively,and this phenomenon is more serious for good fluidity of melt. The average flow ratio in Archimedes spiral mold is 6% larger than that in square spiral mold for PP, and 4% for PE, the average flow ratio of PP is 19% bigger than PE in Archimedes spiral mold, and 15% in square spiral mold. The influence of the cavity profiles on the melt flow ratio is more significant for good fluidity of melt.

研究结果表明：在阿基米德螺旋线模具中，PP在注射压力为150~160 MPa时取得最大流动比485，PE在注射压力为160~170 MPa时取得最大流动比419；在方形螺旋线模具中，PP在注射压力为100，120和150 MPa，PE在注射压力为130和140 MPa时流动比及所对应的注射速率出现波动，且流动性好的熔体波动更为严重；PP在阿基米德螺旋线模具中的流动比均值较其在方形螺旋线模具中大6%，而PE大4%；在阿基米德螺旋线模具中流动比均值PP比PE的流动比均值大19%，而在方形螺旋线模具中PP的流动比均值比PE的大15%；流动性好的熔体受模具型腔轮廓特征影响大。

In this paper, the effects of thermal field of fast axial flow CO〓 laser are analyzed carefully and systematically.

本论文对快速轴流CO〓激光器中的热场效应进行了全面系统研究，在充分考虑热效应引起的放电工作气体负透镜效应以及谐振腔镜片正透镜效应的情况下综合分析它们对激光谐振腔振荡场模参数的影响，最后给出了在一定功率与光束发散角要求下对器件参量的要求。

In order to study the output characteristics of diode-end-pumped Nd:YAP laser operating at 1341.4nm,the thermal focal lengths of end-pumped Nd:YAP laser were calculated and measured,and the output results of lasers with plane-plane and plano-concave resonators were compared respectively.

为了研究Nd：YAP晶体在LD端面抽运中的1341.4nm激光输出特性，采用理论计算和实验测量了实验系统的热焦距，对比了平平腔和平凹腔激光输出结果。

By introducing fused-silica prims tocompensate the group velocity dispersion, as short as 8.5 fs pulses at 710nm isachieved without employing chirped mirrors. In our knowledge, this is the shortestpulses produced domestically from a KLM Ti:sapphire laser in China. Finally, The amplitudes and phases of femtosecond pulses generated from theKLM Ti: Sapphire laser are diagnosed by using the technique of second-harmonicgeneration-frequency-resolved optical gating.

第三，在实验上，在自行研制的自锁模钛宝石飞秒激光器中，改进腔的设计，较好地减弱了腔内频率依赖的腔模效应对频谱展宽的限制作用，获得了最宽达144nm的宽带光脉冲频谱输出，并在未采用啁啾镜的情况下，利用三阶色散系数小的熔融石英对补偿色散，获得了8.5fs光脉冲输出，为目前国内最好记录，达到国际先进水平。

With the aid of scanning electron microscope, the experiment was made about how the filter of deposition chamber influences the content of impurity in film and the result of this test showed that the structure, number of filter spacer strongly influences the impurity content of film.

在扫描电镜下观察了沉积腔的过滤对薄膜杂质含量的影响，观察结果表明：过滤挡块的数量、结构对过滤宏观粒子的效率具有很大的关系，当弧形腔中复合挡块数量4块时，在扫描电镜已很难发现有宏观粒子。

Protein disulfide isomerase is one of main retention proteins in ER, which is an abundant protein in luman of the ER especially in secretory cells.

蛋白质二硫键异构酶是内质网腔内的主要驻留蛋白之一，在分泌细胞的内质网腔中含量非常丰富，其主要功能是催化细胞内分泌蛋白和膜蛋白新生多肽的二硫键形成。

At this point suction chamber maximum volume Vs, is also sealed between the two rotors are not discharged from some of the pressure in the exhaust gas state, its volume of Vc, this part of the expansion of gas will be brought back after two into the suction chamber.

此时吸气腔的容积最大为 Vs ，在两个转子之间还封存了部分未被排出的处于排气压力状态的气体，其容积为 Vc ，这部分气体经过两次膨胀后将被带回到吸气腔中。

A motion model was built for the spiral-grooved endoscopic micro-robot working inside the lumen of human body.

针对人体内腔粘液为非牛顿流体的特点，推导了非牛顿流体的变形雷诺方程，建立了螺旋内窥镜机器人在人体内腔中运动的数学模型。

During the operation of the salt cavern gas storage, the salt bed around the salt cavern will generate variation of stresses because of strata pressure and internal pressures of the salt cavern s.

盐穴储气库在运行过程中溶腔周围的盐层受到地层压力和溶腔内压的多重作用而产生应力变化。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。