在...后面

They are the industrialist that have love and responsibility heart very much, they are risking life danger to rebuild for disaster area in forefront of Sichuan disaster area exert oneself, when giving money, some netizens hide at the back of computer to scold them with the most evil-minded language however, and their family and parents, I think this too not should.

他们都是很有爱心和责任心的企业家，他们在四川灾区第一线冒着生命危险为灾区重建出力、出钱时，有些网友却躲在电脑后面用最恶毒的语言骂他们，以及他们的家人和父母，我想这太不应该了。

He has a beauty garden behind his house,he do morning excise in it every morning.

在他的房子后面，他有一个漂亮的花园，他每天早上在那里晨练。

I recommend all the spectators remain behind all fairway guards for your own safety.

在此 我提醒一下，为了大家的安全，请所有观众在球道保护网的后面观看。

As he crosses the street, he is surprised to see two rats emerge from a storm drain and fall into step behind him.

就在过马路的时候，他吃惊地发现两只老鼠从下水道跑出来，紧跟在他屁股后面。

I know our destination is getting farer and farer than before, that's why I'm doing my best to get nearer and follow up behind you.

我知道我们的距离不之前越来越远了，所以我现在在努力的在你后面的追上来。

I was working feverishly to get down all the names when I felt a tap on my shoulder.

这时有人轻轻的拍我肩膀，坐在我后面的学生悄悄告诉我："他在点名呢。"

There is a very beautiful flower garden behind his house. And every morning he does exercise in it.

在他的房子后面，他有一个漂亮的花园，他每天早上在那里晨练。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

Bay to Breakers: It is an annual footrace which takes place in San Francisco on the third Sunday in May.

Bay to Breakers 是一年一度五月的第三个星期日在旧金山举办的赛跑比赛，许多穿著夸张或完全没穿的群众会走在参赛者后面，因而赋予这场活动狂欢的氛围。

Bay to Breakers: It is an annual footrace which takes pla ce in San Francisco on the third Sunday in May.

Bay to Breakers是一年一度五月的第三个星期日在旧金山举办的赛跑比赛，许多穿著夸张或完全没穿的群众会走在参赛者后面，因而赋予这场活动狂欢的氛围。

It was Napoleon, the immense somnambulist of this dream which had crumbled, essaying once more to advance.

那人便是拿破仑，梦游中的巨人，他还想往前走，去追寻那崩塌了的幻境。

This method alleviates the highly dependent on domain knowledge experts. The quality and efficiency of the KBS were improved.

使用这种设计方法减小了对领域知识专家的严重依赖，提高了知识系统开发的质量和效率。