| 1. | Like resonances , this mechanism can pry open gaps in rings
和共振一样，这个机制也会在环中撬开出环隙来。 |
| 2. | The lubrication theory of the couette laminar flow between two concentric cylinders
环隙科特层流润滑理论 |
| 3. | Boiling heat transfer enhancement in a vertical annulus by introduction of air in liquid flow
内加热垂直环隙中引入惰性气体时的沸腾传热 |
| 4. | The gaps will grow until the satellite ' s repulsive forces are counterbalanced by the tendency of rings to spread during collisions
环隙会一直拉大，直到卫星的斥力与行星环在碰撞时所产生向外扩散的力量达到平衡为止。 |
| 5. | The key problems for mf are concentration polarization and membrane fouling . mf assembly with outside helical flow is a new kind of equipment which can enhance permeate flux by means of the operating principle of a hydrocyclone . and up to now many researches of it has been mainly done experimentally
外旋流式膜器巧妙地将水力旋流器的原理与管式膜器微滤相结合，是一种新的强化微滤的膜器结构，目前对其膜器环隙内的流场分布及分离性能研究均处于起步阶段，且都以实验研究为主。 |
| 6. | Fisrt , the flow field of radial and tangential annulus with rotating flow are made by using an advanced piv system , its flow field characteristics are obtained preliminary probed . it is found that the flow field characteristics are not the same between unpermeateing flow and have permeateing flow , otherwise the flow field is compared between rotating flow and dynamic tubular membrane
首先通过采用先进的piv测试系统，对旋转流膜器的径向环隙和切向环隙处的流场进行了实测，初步探讨了其流场特性，发现在无渗透流和有渗透流的情况下其流场并不相同，并与旋转动态膜的分离特性进行了比较。 |
| 7. | It was found that the ultra - fine powder can flow smoothly in a spouted bed with a draft tube under some sorts of design parameter and operating condition , thus a new effective method to improve fluidization quality of the ultra - fine powders is obtained ; at higher supplied gas velocity , an increase in the solid circulation rate is observed ; the extent of the distance between the nozzle and the draft tube inlet result in the promotion of the solid circulation rate ; the solid circulation rate increase with increasing the draft tube diameter or the bed mass ; the gas bypassing is nearly zero in the present work ; and the solid flow in the annulus is observed as a moving bed
结果表明：在一定的床层结构和操作条件下，超细粉可以在导向管喷动床中实现平稳流化，从而为改善超细粉的流化质量提供了一种有效的新方法；固体循环速率与喷动气流量、导向管直径、导向管底部与喷嘴出口间距以及床层装填量成正比；气体则基本上不存在“旁路”现象；环隙区中的颗粒流动表现为一移动床特征。 |
| 8. | Fluidized behaviors of ultra - fine powder caco3 of mean diameter 5 um in a spouted bed with a draft tube were investigated , studying the effects of geometry and operating parameters on the two - phase fluidized characters such as the initial spouted behavior , the solid circulation rate , the gas flow distribution in the spout and the annulus , and the solid flow in the annulus
本研究以平均粒径为5 m的caco _ 3超细粉为物料，对超细粉在导向管喷动床中的流化行为进行了系统的实验研究，考察了床层结构和操作条件对起始喷动行为、固体循环速率、气体在床层双区中的分配以及固体颗粒在环隙区中的流动等气固两相流动特征的影响。 |
| 9. | The main contributions of this work are included as follows : ( 1 ) numerical tests of the outside axial and helical flows were carried out respectively . the velocities and pressure profiles and shear distributions have been obtained and they were compared due to the different flow field . it is concluded that when no particles are deposited , the helical flow would lower the pressure on membrane surface to some little extent but not markedly
( 1 )对外轴向流和外切向流两种方式下膜器环隙内流场进行变参数数值实验，作出流场及切应力的分布规律，分析无颗粒沉积时层流条件下流动结构对过滤通量的影响，认为：采用外旋流的方式将对膜面压力有削弱作用，但并不明显。 |
| 10. | In this paper , the characteristics and details of the laminar flow fields in the annular gap of the modules were theoretically studied by numerical simulation method first time . the mechanism of the microfiltration with outside helical flow was analyzed . its results were compared with the former experimental results and those of outside axial flow mf and would provide the theoretical basis for optimization design
本文采用数值计算的方法首次对层流范围内膜器环隙内的流场进行数值模拟，从理论的角度分析其流场分布的细节和特点，与前人的实验研究结果和外轴向流微滤进行比较，分析外旋流强化微滤的机理，对膜器优化设计提供理论依据。 |
