导出方程

It can be employed to transmit torque by the shear stress of MR fluids.In this paper,the design method of the disc-shaped magnetorheological fan clutch is investigated theoretically.The expressions of the torque and the output rotational speed within the fan clutch is derived to provide the theoretical foundation in the discal design of the clutch.A Bingham model is used to c...

将磁流变液用于发动机冷却系风扇离合器的设计中，在理论上分析了盘式磁流变液调速风扇离合器的工作机理，应用B ingham模型来描述磁流变液的本构方程，建立了离合器的输出转矩与转速的计算模型，导出了离合器基本几何参数的工程设计计算公式，为盘式磁流变风扇离合器的设计提供了理论依据。

With the analytical method, a weak anchoring and planar alignment nematic liquid crystal cell,whose substrates have different anchoring strength, has been studied(This is named dissymmetric NLC cell).

用解析方法研究了上、下基板锚定强度不同的弱锚定沿面排列向列液晶盒，给出了指向矢倾角θ满足的方程和边界条件，讨论了它的解，导出Freedericksz转变的阈值场强和饱和场强。

The control of system can be converted to the motion planning problem for a driftless system.

首先导出由两个对称刚体组成的力学模型的非完整姿态运动方程。

In addition, incorresponding solution set of the equation.The explicit expression of the nearest matrix to a given matrix in the Frobenius noum have been provided.

另外，研究了矩阵方程的自反矩阵解集，利用矩阵的分解，导出自反矩阵问题的最佳逼近解。

The modifined formula of interlaminar stresses is derived and by using continuous conditions.

给出了复合材料层合板壳弯曲变形的高阶位移模式，利用连续条件，导出了层间应力修正公式，并推导了相应的有限元方程。

In chapter 5, according to the equation of potential energy, the redundancy formula is formulated, and the elastic and geometric redundancy is deduced further. Finally, the overall flexibility and kinematically property is evaluated through redundancy for the structures.

第五章，根据势能方程推导出结构冗余度，导出弹性冗余度和几何冗余度，通过冗余度分析研究了结构体系特征和整体柔性。

Based on a 2×2 eigenvalue problem, a 3×3 Lenard pair of operators and a new 1+1 dimensional soliton hierarchy are presented.

本文立足于一个2×2谱问题，获得了3×3 Lenard算子对，并由此导出一类非平凡的(1+1)维孤子方程族。

The propagation modes in the lenslike medium , including the spot size, field distribution pattern and their propagation constant,are obtained by solving the Helmholtz equation in the cylindrical coordinate.

从求解柱坐标内亥姆霍兹方程出发，导出了类透镜介质传导模的特征参量、场分布状态及传播常数，求出了入射激光束和导模之间的耦合系数，并讨论了它们的物理意义。

In 1959 Sauerbrey developed an empirical equation to describe the mass sensitivity of gas phase mass deposition on a piezoelectric quartz crystal——Sauerbrey equation:ΔF=〓=-CΔm, where ΔF is measured frequency shift, in Hz; F〓 is the fundamental resonant frequency, in Hz;Δm is mass change, in g; A is piezoelectrically active area , in cm〓;μ〓 is shear modulus of quartz, 2. 947×10〓g· cm〓;ρ〓 is density of quartz, 2. 648g·cm〓; C is mass sensitivity constant , in 〓.

1959年，Sauerbrey最先提出了将压电晶体谐振器用作定量测量质量的装置，并从理论上导出了频率与质量变化之间的关系式——Sauerbrey方程：ΔF=〓=-。。。

Based on the source terms and fusion burn-up equations,a three-temperature plasma model is founded in which the electrons,ions,and the radiation filed are represented by separate temperatureskT_e,kT_i and kT_r,respectively,where kT_r is characterized by a Planckian distribution.

第四章建立了考虑α粒子慢化的两温模型和三温模型，首先导出了考虑慢化的α粒子对等离子体的能源项，替换已有的两温模型的等离子体能量密度方程中的能源项，将其改进为考虑α粒子慢化过程的两温模型，与瞬时沉积能量的两温模型作了对比，在不同的初始温度密度条件下考察了α粒子慢化对等离子体聚变燃烧的影响。

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。