查询词典 hysteresis coefficient

In order to solve this problem, the effects of airflow velocity and airflow direction on heat transfer coefficient of wall surface are studied in this paper.

为了解决这个难题，本文通过实验测试和系统辩识的方法研究了风速风向对墙体表面换热系数的影响。

Equivalent stretch elastic modulus E,sound reflection R and transmission coefficient T are calculated by the method of equivalent stiffness and transfer matrix separately.

通过试验获取了碳纤维、凯夫拉纤维、玻璃纤维、超高分子量聚乙烯纤维复合材料的力学性能和声学性能参数，在此基础上分别利用等效刚度法和传递矩阵法，对CF/UHMPEF、CF/KF、CF/GF混杂纤维复合材料的拉伸刚度、声反射系数和声透射系数进行计算。

Flow-field simulation shows that radial pressure gradient goes down fast and air flowrate is nearly directly proportional to the well vacuum and the soil permeability coefficient. It also indicates that stop-off coating will play an important role in SVE.

采用Galerkin三角形有限单元法对复合地表边界的竖井土壤气相抽提稳态流动问题进行了数值模拟分析，模拟结果显示：气相压力沿径向梯度迅速下降，抽提流量与土壤通透系数及真空度呈现高度相关的正比例关系，且地表隔绝覆盖层对流场影响很大。

Manufactured-sand concrete ; stone-dust ; resistance to freezing ; chlorine ion permeability coefficient

机制砂；石粉；抗冻性；氯离子渗透系数

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域，主要研究了以下内容：(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手，全面分析了导致当地土壤侵蚀发生的原因，并结合当地采取的水土保持相关措施，阐述了当地水土保持工作的症结所在；(2)结合上土市水土保持试验站多年实测资料和2005年实验资料，应用BP神经网络理论，建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型，并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析，说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度，也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

The results showed that the substrate concentration and temperature were important factors which influenced the rate - controlling step. The results of model calculated with effective diffusion coefficient...

结果表明，底物浓度和反应温度是影响速率控制步骤的重要因素，用得到的有效扩散系数进行模型计算，结果与实验值基本一致。

To this end, the stem design is very small, fillers also used the coefficient of friction PTFE packing, in order to reduce bad back, but it is sent to the small stem, is easy to bend, fillers life was short.

为此，阀杆设计得非常细小，填料又常用摩擦系数小的四氟填料，以便减少回差，但由此派出的问题是阀杆细，则易弯，填料寿命也短。

To this end, stem design very small, another commonly used filler of PTFE packing friction coefficient REDUCING VALVES in order to reduce backlash, but this problem is to send small stem, is easily bent, packing too short life.

为此，阀杆设计得非常细小，填料又常用摩擦系数小的四氟填料，以便减少回差，但由此派出的问题是阀杆细，则易弯，填料寿命也短。

To this end, stem design Multi-stage pumps very small, another commonly used filler of PTFE packing friction coefficient in order to reduce backlash, but this problem is to send small stem, is easily bent, packing too short life.

为此，阀杆设计得非常细小，填料又常用摩擦系数小的四氟填料，以便减少回差，但由此派出的问题是阀杆细，则易弯，填料寿命也短。

There are six major parameters impacting vehicle handling and stability performance: the cg location, the rigidity of tyre side list, the rigidity of steering system, the steering system transmission ratio, the rear axle roll steering coefficient and the entire vehicle circling the vertical axis the rotating inertia.

对操稳性影响较大的主要有6个参数：重心位置、车轮侧偏刚度、转向系刚度、转向系传动比、后轴侧倾转向系数及整车绕垂直轴的转动惯量。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。