this clearly indicates that uniqueness is reached provided that the irrotational and equivoluminal wave velocities, and are real and nonzero. 这就清楚地表明，如果无旋波速度和等体积波速度是不等于零的实量，则唯一性是成立的。
2.
Irrotational and solenoidal split problem on a dyadic green ' s function of the field vector 一类场矢量的并矢格林函数无旋和无散分解问题
3.
Interaction between the large cylinder and the horizontal irrotational shallow water wave with current 流中水平无旋浅水波与大圆柱相互作用
4.
< uk > this clearly indicates that uniqueness is reached provided that the irrotational and equivoluminal wave velocities , and are real and nonzero . < / uk > < uk >这就清楚地表明，如果无旋波速度和等体积波速度是不等于零的实量，则唯一性是成立的。 < / uk >
5.
As being superfluid , particle current in bec is irrotational and this makes that its respondence to rotation is different from rotating as a whole for usual fluid and is to form a vortex or vortex lattice 作为超流体， bec中的粒子流是无旋的，这使得它对旋转的响应异于普通流体的整体转动而产生涡旋或涡旋晶格。
6.
Next , in order to comprehand the electromagnetic characteristics and the dynamic characteristics of the new type of magnetic micromotors , the dissertation applied the concept of the magnetic scarlar potential of the irrotational magnetic fields and set up the mathmatic model for the inner magnetic field of the new type of motors from the basic equations and the boundary conditions of the motor magnetic field . oh the basis of the mathmatic model , the dissertation analized the various qualities of the magnetic field of the air gap between the rotor and the stator and gave a detailed calculation of the air gap ' s magnetic potential , magnetic field intensity , magnetic induction , the shape of the magnetic scarlar potential level surface , the distribution of the magnetic circuit , the magnetic induction the self - inductance and the mutual inductance of the coils 其次，为全面了解这种新型电磁电机的电磁特性和动力特性，本文从电机磁场的基本方程及其边界条件出发，应用无旋磁场的标量磁位概念，建立了端面摇摆式电磁微电机内部磁场的数学模型，并以此为基础，详细分析了电机气隙磁场的各方面性质，对气隙磁场的磁标位、磁场强度、磁感应强度、等磁位面形状、电机工作磁路的分布、电机的工作磁通量以及激励绕组的自感和相互之间的互感进行了详细的分析计算。
7.
As we know , inverse techniques make blade ' s profile well compatible with its surface velocity distribution , however , they give designers big challenges that the ideal velocity distribution is hard to obtained and sometimes the non - physical solution , such as double covering of flow field or unclosed profiles , would come out . the proposed design procedure in the paper has avoided the disadvantage mentioned above . in this paper , a quasi - irrotational equation is used to describe the flow in cascade instead of the generally used irrotational equation 众所周知，一般的反问题和混合问题的最大特点，是在给定的压力面和吸力面上的压力分布或速度分布条件下，直接得到叶片的几何形状，它可以使叶型型面与表面气流参数有机结起来；其不足之处在于，对设计者而言，很难给定理想的叶片表面压力分布或速度分布，并且有时会得到一个非物理解，如：得出的初始叶型可能会出现前缘、尾缘不封闭的现象。
