参数变化

During the climbing phase, the flight parameters and weight of Trans - Aerosphere Vehicle change so much, thus the vehicle＇s controllability and stability vary very quickly.

跨大气层飞行器在爬升过程中飞行参数及质量特性变化剧烈，因而飞行器的操纵稳定特性也相应迅速变化。

Methods The optical calculation was taken as the following by using the parameter of Gullstrand model eye:①The refraction of silicone filled eye in non-accommodative status;②The refraction of silicone filled eye in non-accommodative status;③The aniseikonia analysis when one eye filled with the silicone oil;④The IOL power re-calculation.

采用Gullstrand模型眼参数进行以下分析：①非调节状态下正常眼球与硅油填充后眼球的屈光状态；②调节状态下正常眼球与硅油填充后眼球的屈光状态；③无晶状体眼玻璃体腔填充后的屈光状态；④正常眼球与填充硅油后视网膜像放大率变化；⑤硅油填充后的白内障人工晶状体植入术人工晶状体度数的变化。

Important controlling parameters such as pressure,temperature varieties of the azeotrope tower is analyzed using HYSYS static simulation

利用HYSY静态模拟，分析了共沸塔的各重要控制参数如压力、温度变化后，共沸塔的变化

Adopting MATLAB software to carry on simulation about the parameter self-adjustable fuzzy PID controller set up of application to the pulse position loop of the radar servo system. It has made a detailed analysis to its simulation result, compared with original system and PID control system about step function response, slop response and the system characteristic by the parameter of control system changed.

采用Simulink软件对所建立的参数自整定的模糊PID控制器在伺服系统单脉冲跟踪位置回路中的应用进行了仿真，对仿真结果作了详细的分析，并与原系统和PID控制系统就阶跃响应、斜坡响应以及控制对象参数发生变化时系统的性能进行了对比。

To study the effect of papermaking wastewater irrigation on soil hydrological properties in saline reed field, different wastewater irrigation frequencies were employed in the saline reed field of Yellow River Delta. Soil infiltration course and hydrological properties were determined in field and laboratory. After wastewater irrigation, the change of the soil pH value, soil salt content and soil hydrologic-physical properties were observed. The results were showed that: 1 After wastewater irrigation, the mean reduction of soil pH value was 6.0%.

为研究造纸废水灌溉对黄河三角洲内陆盐碱芦苇地土壤水文特征的影响，通过设置芦苇地不同废水灌溉次数下的随机区组试验，采用田间测量土壤入渗过程和实验室内测定水文物理参数相结合的方法，分析造纸废水灌溉前后土壤pH值、含盐率及土壤水文物理参数的变化。

Finally, aluminium alloy foam specimen with different structural parameters were made to investigate the variation of underwater sound absorption coefficient.

最后，本文利用前面得到的低压渗流法的较佳的工艺参数，制备了不同结构参数的泡沫铝样品，并研究了样品的水下声吸收系数的变化规律。

Singlefactor adjustment tests for the fuel injection parameter optimization were performed on a CA6DL235E3 heavyduty common rail diesel engine with the basic Euro3 injection maps by means of the INCA calibration tool, and the influences of the fuel injection parameters on the airfuel mixing and combustion were analyzed comprehensively with the help of the microscopic field histories found by the software STARCD.

在一台高压共轨CA6DL235E3重型柴油机欧3喷油MAP基础上借助INCA标定工具进行为优化喷油参数的单因素调整试验，并利用STARCD软件获取的微观场变化综合分析喷油参数对油气混合及燃烧的影响规律。

The proposed algorithm comprehensively considers the effects of local area average brightness of the background and space complexity on visual resolution. In order to judge whether the variance of gray is effectively percepted or not, the just noticeable difference is derived. The changes in the number of perceptible pixels between the original image and the enhanced image can be calculated by use of JND parameter. Thus quantitative results to assess the quality of enhanced images are obtained.

算法综合考虑图像局部区域的背景平均亮度和空间复杂度对视觉分辨力的影响，导出了用于判断局部灰度级跃变是否被有效感知的重要参数―临界可见偏差JND，并利用此参数分别计算出图像增强前后有效感知像素数的变化情况，从而定量地给出图像增强质量的评价结果。

In this disclosure, the computations and analyses of stress and displacement fields of drum and conveyor are carried out by a finite element analysis software, ANSYS. And by changing the parameter value of drum and conveyor, influences of parameters on the strength and displacement are investigated.

本论文应用ANSYS有限元分析软件对大型卧螺离心机的转鼓和螺旋输送器进行了应力场和位移场的计算与分析，并调整它们的各项参数来研究参数的变化对它们的强度和变形的影响。

Physical and chemical properties including density, viscosity, surface tension, the flash point, cetane number, and the stability of the different contents of ethanol-diesel parameters were measured and analyzed. The experiments were performed using 0. 2%, 0.5%, 1%, 2%, 5% 10%, 15%, 20%, 25%, and 75% ethanol-diesel blends. At the same time, the influence of temperature on the blends properties was tested.

通过对不同比例（乙醇含量分别0.2%、0.5%、1%、2%、5%、10%、15%、20%、25%、75%）的混合燃料的密度、粘度、闪点、表面张力、十六烷值、稳定性和磨损性等理化性质的测试和研究，总结出了乙醇含量对混合燃料物性参数的影响规律，归纳出各种参数随温度变化的规律。

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。