溶液和熔体的粘度等性能曲线并不呈现平坦.Among the properties which do not show a leveling - off are the viscosities of solutions and melts.探讨了PET酯 化、聚合生产过程对熔体直接纺丝的影响.The effect of PET production on melt direct - spinning is discussed.用熔体发泡法...
该方法既适于自治系统又适于非自治系统.Above method can be applied to both autonomous system and nonautonomous system.研究具有年龄结构的非自治的SIS模型.In this paper , we study a nonautonomous SIS model with age structure.研究了一类利用线性状态误差反馈控制方法耦合的非自治悬臂振动系统的全...
He thought for a moment, stroking his well-defined jaw.他摸着自己轮廓分明的下巴想了一会儿。Carla, curled up on the sofa, was smoking a cigarette and stroking her cat.卡拉正蜷缩在沙发上，一边吸着烟，一边轻抚着她的猫咪。No man can tame a tiger into a kitten by strok...