借助于...

After analyzing the structure of sentences,Tarski found that, it was impossible to define the truth of the calculus of classes directly,but making use of the structure character of sentential functions could give us the approach to escape the dilemma:Firstly,we could defined the concept of satisfaction in sentential functions by means of recursive method;Then,we could regard sentences as a peculiar form of sentential functions;Finally,with the help of the concept of satisfaction,we could defined successfully the truth of the calculus of classes.

通过分析语句的结构，塔斯基发现很难直接定义出类演算语言的真概念，而语句函项所具有的可递归形成的结构性质可以使我们得到脱离困境的办法：先采用递归方法针对语句函项定义出满足概念，然后把语句作为语句函项的特殊形式，借助于满足概念最终可以得到类演算语言的真概念定义。

Besides, with the help of invariable temperature calorimeter, ignition character of coal with excessive oxygen is studied.

此外，借助于恒温式氧弹仪对煤在过氧条件下的着火性质进行了研究。

In the 17th and 18th century, many artists were aided by the use of the camera obscura.

在十七、十八世纪时，许多艺术家借助于使用的暗箱。

According to this theory, the image was made with the aid of a magic lantern, a simple projecting device, or by means of a camera obscura and light-sensitive silver compounds applied to the cloth.

依照这个理论，这个图像是借助于早期放映机的帮助，一种简单的突出设备，或者利用暗箱和光敏感镀银混合物运用于布料上面。

The techniques commonly used are some matrix-factorizations such as the generalized singular value decomposition, the canonical correlation decomposition, and the quotient singular value decomposition.

常用的方法是借助于一些矩阵分解，如广义奇异值分解，典型相关分解，和商奇异值分解等。

The intralellular labeling methods developed for single cell analysis are summarized in this review, including cell itself acting as a microreaction chamber for derivatization, dericatization mediated by liposome or polyethylene glycol to increase permeabilization of cell membrane, on- and post-column derivatization during single cell analysis with capollary electrophoresis or microchip electrophoresis and labelling of cells with quantum dots.

本文综述了在单细胞分析中常用的荧光标记方法，包括细胞作为微反应器的衍生法，借助于脂质体与聚乙二醇等增加细胞膜通透性的衍生方法和在毛细管/芯片毛细管电泳分析单细胞时柱上衍生和柱后衍生法以及量子点的标记法等。

By means of the celestial globe which has been corrected in annual differential, for Zheng He's Star Drawing Pictures have been restored, on the basis of which each star in the Star Drawing Pictures corresponds to is contemporary name.

借助于经过岁差修正的星球仪复原了四幅郑和牵星图，并在此基础上考证出牵星图中每颗星所对应的现代星名。

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

Its prominent characteristic is to set up an ideal model, which is based on a certain objective object and built with the help of the abstract thinking.

它的突出特点，是建构一个理想模型。这个模型是以一定的客观对象为基础，借助于思维的抽象作用而建立起来的。

His transposing of traditional ink painting techniques and composition onto canvas meant the retention of large areas of white, unpainted ground, and a fluid use of the line, without recourse to the classical perspective and chiaroscuro of traditional western academic painting.

他将传统的水墨画作法和创作转换到油画画布上，表现为保留了大片的留白、没有画出的质地和线条的流畅运用，而不借助于西方学院派的经典性透视法和明暗法的绘画技巧。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失