In silk, it would be better to describe the chains as being antiparallel . 在蚕丝中，更确切地讲，这些链是反向平行的。
2.
With a given collimator the integrated reflections in the parallel and antiparallel positions will be equal . 对于一个给定的准直器，在平行和逆平行位置时积分反射是一样的。
3.
We consider a neutral particle with magnetic moment antiparallel to the field . with the interaction potential energy between the magnetic moment of the particle and the magnetic field , we obtain the classical motion equation of the neutral particles in the loffe trap . in some limit conditions , by using the perturbative method , the equations may take on concise forms . of which the two equations about x and y are mathieu equations . if we properly set the parameters and have the condition a > > q > 0 , we can solve the mathieu equation with the traditional wkbj method . as a new attemptation , with fourier series expansion we solve the mathieu equation and obtain the classical motion law of the neutral particles 若阱的参数设置使得条件> > q 0成立时，我们可以利用传统的wkbj方法近似求解马丢方程。作为一种新的尝试，本文还采用傅立叶级数展开的办法来对马丢方程进行求解，从而得到中性粒子在阱中的经典运动规律。在研究ioffe阱对中性粒子的囚禁问题时，实际上我们更感兴趣的是马丢方程的周期解，而要想获得这种周期解，和q必须满足一定的关系，亦即必须选择阱的特定的参数和粒子的特定初始条件，对这一问题我们进行了尝试性的研究。
4.
3 . the solution for the distribution of potential internal the dielectric ellipsoid has been obtained by means of ellipsoidal coordinates , and has obtainted the expression of the polarization field strength in the dielectric ellipsoid , calculated the included angle value of polarization vector and the external field vector , making programe to compute to get the relation shetch between the included angle value of polarization vector and the external field vector and we have discussed the result and hold that the direction of polarization field strength with that of the external field don ’ t always strict antiparallel 二、讨论了带电粒子在均匀电磁场中的相对论运动规律。三、讨论了在均匀电场中电介质椭球体的极化规律。证明了电介质椭球内的极化场强方向与外电场方向并非严格相反,只有当外电场与电介质椭球的某一主轴平行或者当椭球体三半轴的大小都相等时,极化场强方向与外电场方向才严格相反。
5.
It also gives the motive of the ka - band vco and mixer , associated with the subject ' s requirement and the realistic conditions , according to which a proposal is confirmed that the gunn diode and the varactor are mounted in the same cavity to fulfill the vco and an antiparallel diode pair is used to fulfill the harmonic mixer . in chapter 2 , based on the basic theory of negative resistance oscillating , we analyses the gunn oscillator and it ’ s tuning character . chapter 3 introduces the theory of millimeter - wave harmonic mixer 以此为根据结合课题需要和实验室的实际条件,确定vco采用耿氏管腔体振荡器形式,变容管与耿氏管安装在同一个腔内以进一步减小体积,采用反向并联二极管实现谐波混频;第二章介绍负阻振荡器理论及其调谐原理;第三章介绍毫米波谐波混频器基本原理;第四章给出了振荡器及谐波混频器的设计过程,整个组件联调的结果;最后是结束语,分析了电路中存在的问题,指出了改进方向。
