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In the last chapter, on the basis of theories in paper [4, 5], the notions of strong mixing, weak mixing, generator and expansion of the variable-parametric dynamical system are introduced, it turns out that in variable-parametric dynamical system strong mixing implies weak mixing and then implies transitivity; it is proved that if and both are variable-parametric dynamical system, F conjugates with G , the members of F are communicate with each other and the members of G are also communicate with each other, what's more, they are both homeomorphism, then F is strong mixing implies G has the same properties; futhermore, we prove that F is strong mixing implies F Devaney chaos in the sense of modification in variable-parametric dynamical system and that F Devaney chaos in the sense of modification if and only if G Devaney chaos in the sense of modification when semi-conjugate with and they both are communicate and homeomorphism; at last, we illustrate that F has generator if and only if it has weak generator, and we also prove that if F is expansion, then F has generator.

在第三章中，我们在文[4，5]的基础上，提出了变参数动力系统拓扑强混合、拓扑弱混合以及变参数动力系统的生成子、扩张的概念；证明了变参数动力系统拓扑强混合蕴含拓扑弱混合，进而蕴含拓扑传递；证明了：如果，为两个变参数动力系统，F与G拓扑半共轭，且F两两可交换，G两两可交换，它们均为同胚映射，那么F拓扑强混合，则G也有同样的性质；本章还证明了变参数动力系统拓扑强混合蕴含F在修改的意义下Devaney混沌；在此基础上得出了：如果变参数动力系统与变参数动力系统拓扑半共轭，它们都两两可交换，并且它们均为同胚映射，那么F在修改的意义下Devaney混沌当且仅当G在修改的意义下Devaney混沌；得出了F有生成子当且仅当F有弱生成子；如果F是扩张的，则F有生成子。

The step response and impulse response of homogeneous earth half space, marine double half space and four-layer earth models to horizontal electric dipole source were computed in this paper. A concept of transient impulse time was put forward.

本文计算了水平电偶极子源均匀大地半空间，海洋均匀双半空间和海洋四层模型的阶跃响应和冲激响应，提出了瞬变冲激时刻的概念。

It introduces the concept of power semigroup, studies the relations between homomorphism and congruence of power semigroup and obtains some perfect results.

给出了幂半群的概念，研究了幂半群的同态与同余关系，讨论了它们之间的关系，并得到了一些理想的结果。

Then the homomorphism s and isomorphisms of GV-semigroups were given by using the family maps.

定义一类映射，用此类映射描述GV-半群的结构，进一步认识GV-半群的结构。

The lattice implication homomorphism image of an ideal containing kernel is proved to be an ideal too.

建立具有相容交dcpo上的ξ-半拓扑与模糊ξ-半拓扑之间的序同态关系。

Of or belonging to the insect order Hemiptera, which includes the true bugs of the suborder Heteroptera and their allies of the suborder Homoptera, characterized by piercing or sucking mouthparts and two pairs of wings.

半翅目的半翅目昆虫的，这类昆虫包括异翅亚目昆虫及同翅亚目昆虫，其特征是具有锐利或吮吸的口器，有两对翅膀

OK. I understand that we basically work from 8:30 to 5:30 with an hour-long lunch break from 12 to 1, right?

好。我知道我们一般8点半上班，5点半下班，从12点到1点之间有一小时的休息时间，对吗？

OK. I understand that we basically work form 8:30 to 5:30 with an hour-long lunch break from 12 to 1, right

好。我知道我们一般8点半上班，5点半下班。从l2点到l点之间有一小时的休息时间。对吗

Loess Plateau is locate in areas transited from semi-arid and semi-humid areas to arid hungriness area, Because of the influence of war and long-term\'s unreasonable utilization, the ecological environment in this region is poor and serious soil and water loss is heavy. The water and soil conservation ecosystem project of emphasis tributary is implemented by Yellow River Committee from 2000, during several years centralized treatment,Project Construction have got remarkable effect.

黄土高原地处我国从半湿润半干旱带向干旱荒漠带过渡的地区，由于受历史上战乱和人为不合理开发利用的影响，生态环境比较脆弱，经济发展滞后，水土流失严重。2000年以来，黄委会启动实施了以黄河多沙粗沙区为治理重点的黄河水土保持坡面生态工程的重点支流治理项目，经过几年投资集中治理，项目建设成效显著。

The comparison of the two kinds of pulse width shows that the FWHM pulse width is different from the RMS pulse width for the subcycle hyperbolic secant pulses,and the absolute phase affects the pulse width seriously.

研究结果表明，对于亚周期（半高全宽脉冲宽度小于一个光学振荡周期）双曲正割脉冲，均方根脉冲宽度与半高全宽脉冲宽度有较大的差异，并且绝对相位对均方根脉冲宽度的影响很大。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！