| 1. | Adjust bed height and side rails
调整床铺高度与围栏。 |
| 2. | Select suitable bed height to ensure that the feet can reach the floor when sitting
应选择高度合适的睡床，坐在床边时双脚能平放在地上。 |
| 3. | For system stability , the influence of the static powder bed height was the most obvious , whereas the impact of the fluidization air velocity was slighter
对于系统稳定性，静止料层高度的影响最显著，而流化风速的影响较轻微。 |
| 4. | The experimental results showed that the maximum pressure drop and the operational pressure drop were related with particles diameter , bed height and superficial velocity , and the latter was also related with bed structure
实验表明：双喷嘴矩形喷动床的最大喷动压降和操作压降与颗粒粒径、床层高度及表观气速有关，而操作压降还与床体结构有关。 |
| 5. | Using sawdust as raw material , under the condition of 2 % - 4 % opening rate of distributor , the effects of particle size and sawdust bed height on fluidization velocity in cold bubbling fluidized bed were determined
摘要冷态条件下，在鼓泡流化床中采用木屑为原料，分布板在2 % ~ 4 %不同开孔率的条件下，分别考察了原料粒径和床层高度对木屑流化速度的影响。 |
| 6. | The results of this experiment showed that pressure drop and flow velocity are related in quadratic function ; the effects of opening rate of distributor sad bed height on critical fluidization velocity are rather slight , while the effect of particle size on critical fluidization velocity is very obvious
得出结论：分布板压降和流速成二次函数关系；以木屑为原料，分布板开孔率和床层高度对临界液化速度的影响不大，粒径分布对临界流化速度随粒径的增大而增加。 |
| 7. | In this paper , high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model . the distribution of gas velocity and pressure , the temperature field of gas and solid in the moving particulate bed are examined for different conditions . the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance . the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity . in the region of thermal penetration , the porosity of solid bed has significant effect on gas field and pressure loss . it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation . the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
针对移动颗粒床中物料层内的高温气体渗流传热现象，考虑渗流与传热的相互作用，采用局部非热平衡假设建立了多孔介质渗流传热物理数学模型并进行了数值计算.研究了不同情况下床内填充多孔介质中的流速、气固温度和床层压力损失.计算结果表明，高温热气对移动床颗粒料层的热渗透主要发生在渗流入口端区域，增大入口渗流速度以及减小床层物料下移速度将导致物料温度沿床高慢速下降，热渗透深度扩大，热渗透作用区域内的物料温度水平提高.在热渗透作用区域，孔隙率对流场和压力损失有很大的影响.研究结果对于移动颗粒床反应器的设计与运行具有一定的参考作用 |
| 8. | After the discussion of the algorithm of complexity parameters , lyapunov exponent and apen , the pressure fluctuation in fluidized beds is analyzed quantitatively . the effect of different operating conditions , such as variant gas superficial velocities , axial positions and static bed heights , is discussed
在讨论复杂性参数、 lyapunov指数、近似熵的算法基础上，对流化床压力脉动进行定量分析，讨论了表观气速、轴向位置、静床高等不同操作条件对混沌特征参数的影响及其对应的动力学规律。 |
| 9. | The results approve that i ac i is a good parameter to be a token of the diameter distributing of particles . then a criterion of mean fluctuation difference is put forward for b particle . fluctuation complexity varied with different particle , static bed height diameter particle and axis position of sensor are studied
本文认为是颗粒密度的差异造成涨落复杂性均值的差异，而平均涨落偏差| c |广定程度上是颗粒粒径分布的一个重要衡量指标，而且针对b粒子提出了平均涨落偏差判据，实验数据和该判据有很好地符合。 |
