The Floquet form of electromagnetic travelling wave tubes with tape helix is analyzed in the frame.

Stimulated by extended tanh-function method a double methodfor constructing exact travelling wave for nonlinear evolution equations.

使用改进的双函数法,获得了一类非线性发展方程组的多组精确行波解,其中包括孤波解和周期解.

The exact and explicIt'solutions of these equations are obtained by using the travelling wave method.

用行波方法得到了这些方程的显式精确解,即有理分式型孤立波解.

Impedance matching between waveguide and slow-wave structure is significant for performances of travelling wave tube.

在行波管整管性能中,波导与慢波结构的阻抗匹配具有关键作用.

Dispersion waveform of travelling wave propagation in three-phase.

行波在三相上传播色散图.

Trickle irrigation conservers water where limited.

滴灌在水少的地方应用起来可省水.

Motorbike and motor-tricycle-taxis are full of every avenue or lane making a particular landscape.

两轮的,三轮的摩的充斥大街小巷,构成一道独特的‘风景线’.

It cost a mere trifle.

值不了多少钱.

The expense is a mere trifle.

这点花费算不了什么.

Helen rowed with her boyfriend about a mere trifle.

海伦为一点小事与男友争吵.

Assuming you don't air-freight tropical fruit and vegetables to your fridge each day.

假设你不用每天空运蔬菜热带水果过来的话.

The mango is a tropical fruit.

芒果是一种热带水果.

Bananas are tropical fruit.

香蕉是热带水果.

Aromas of tropical fruit with notes of yeast and toast.

热带水果的芳香伴随着吐司和酵母的气味.

Lush, transluscent gold color with aromas of tropical fruit, apple and oak.

华美的金色酒体.散发着热带水果芬芳, 及苹果与橡木烘烤香.

Thank you for the troubles.

费心了,谢谢.

This new book deals with the troubles in Ireland.

这本新书论述爱尔兰的纠纷.

The book deals with the troubles in Ireland.

这本书论及爱尔兰的纠纷.

All the troubles of the world are so far away.

世界的所有麻烦留在酒杯里.

The troubles in my life are coming up roses.

我生活中的烦恼就是成长的玫瑰.

The river system forming process is simulated by combined with the union water trough reality.

结合水槽实际,模拟了与水槽试验结果相似的水系形成.