查询词典 double angle formula

The effects of the linear birefringence and incident polarizing angle upon the performance of a bulk glass optical current sensor are derived and analyzed, a modulation formula to describe the influences of the linear birefringence to the output signal of the sensor is given.The effect of the incident polarizing angle upon the performance of the system and the condition to determine if or not it can exert the influence are also given.

对线性双折射及入射起偏角对光学玻璃电流传感器输出特性的影响进行了理论推导与分析，给出了光学玻璃电流传感器在非理想状态下线性双折射对输出电压的调制函数的数学表达式，并给出了入射起偏角对系统影响的数学表达式及其对系统有无影响的条件。

Properties of angle deformation have been deeply studied,the stress calculation formula that calculating angle deformation of spherical shell is derived.

在深入地研究了球形壳体角变形的性态基础上，推出了球形壳体角变形附加应力简易计算式；给出了角变形区变形特点，和球壳结构与角变形限量间的数值关系，经实践证明可同JB1127－82规定对应使用。

In light of Fresnel formula the author analyses the features of linearly polarized light reflecting on the surface of apparent medium,discusses the relationship between the circumrotation in the plane of vibration,changes of the light intensity and the angle of incidence,the orientation of the plane of vibration,and addresses the relationship between the swing,phase and the incident angle and medium.

自然光在分界面上反射的一些特点在许多光学教材[1，2]上都进行了介绍，本文根据菲涅耳公式和菲涅耳定律，分析线偏振光在透明介质分界面上反射时的一些特点，讨论反射光的振动面所发生的旋转及光强度的变化与入射角、振动面的方位之间的关系；进一步讨论在全反射情况下，反射光的振

Droops affection for cable"s angle and force is analysed and applied droops-modified formula of cable"s angle and force are given.

分析了拉索的自重垂度对其索力和倾角的影响并推导得出索力和倾角的垂度修正实用计算公式。

The parabolic equation can treat large angle incident waves and includes the wave energy loss with Bretchneider—Reid formula which has been verified by lots of indoor and field data, Its numerical model can simulate wave shoaling、refraction、small angle diffraction and bottom friction, and can be aplied to study the wave filed from open sea to shore area.

在抛物型缓坡方程波浪数学模型的建立过程中，采用适用于较大角度传播的基本方程，同时这一模型引入建立在较多实验和实测资料基础上的Bretchnei-der—Reid公式，较好地考虑了底摩损耗问题。该模型可同时考虑波浪的浅水变形、折射和小角度绕射，适用于大范围波浪场的推算。

The testing result shows that there is a difference actual seed dropping angle and the one acquired by calculation, therefore, a formula for the calculation of seed dropping angle even closely suited to production practice has been driven out and a theoretical basis for the application of 2BQM-2 model plastic film mulch pneumatic precision planter in practical production is advanced in this paper.

通过试验结果分析，找出种子的实际的落种角度和计算的落种角度之间的差别，推导出更适合实际生产中所需要的落种角度，为2BQM-2型气吸式精量铺膜播种机在实际生产中的应用提供了一定的理论基础。

Self-weight drooping affection on cable"s angle is analyzed. The droops-modified formula of cable"s angle is derived.

分析了拉索的自重垂度对其在梁上倾角的影响，并推导得出梁上倾角的垂度修正实用计算公式。

Double angle formula can transform the circular function equation to a biquadratic algebraic equation,and the analysis solution can be solved by extract equation directly.

用倍角公式可将该三角函数方程转化成一个四次代数方程，然后用求根公式直接求出解析解。

In response to distortional double coordination about deflection and torsion in the storied covery in which major and secondary beam s are used,utilizing the angle distortion displacement method and moment equilibrium distribution method of deflection and torsion yields the calculation formula of displacement.

针对主、次梁楼盖中正交梁系弯扭变形双协调问题，采用弯扭角变位移法与弯扭力矩综合平衡分配法，推导出杆端位移、弯矩及扭矩的计算公式。

The main contribution of this thesis is that we propose a collaborative filtering recommendation algorithm based on double clustering. This approach first respectively clusters resources and users by the users rating on items, then makes a collaborative filtering recommendation based on the clustering result. The new algorithm can shorten on-line recommendation time. Then, we apply the classical formula of cosine correlation to double clustering algorithm, leaving out the standardization operation. In the end, we implement an educational resource recommender system according to the need of the actual project and the result is positive.

本文的主要意义在于，首先运用聚类技术对用户和资源分别进行聚类，然后利用聚类结果进行协同过滤推荐，由于聚类部分离线周期进行，大大缩短了在线的推荐时间；然后将经典的余弦相似性计算公式运用到双重聚类算法中，省去规范化处理操作，减少运算量；最后结合实际的需要，实现一个资源推荐系统。

These rules reflect some inherent feature of self and nonself, and they are the basic detection criterion of GECISM.

这些规则反映了"自我"和"非我"的内在特征，是GECISM进行"非我"检测的判据。

Until today, the media from China and the outside world still uses the term "Post 89". Regardless to whether it is for commercial gimmick or convenience, everybody still remember "Post 89", a term which carries a strong Cantonese accent.

时至今日，国内外艺术媒体还是在沿用&后八九&这个称谓，不管当初是为了商业噱头还是容易上口好记，反正大家现在是记住了&后八九&这个广东口音很重的词。