既...又...

So the effect of different solvents, such as methanol, ethanol, butanol, tertiary butanol, isoamyl alcohol, tertiary amyl alcohol, diethyl ether and cyclohexane, on the reaction was explored.

在文献所报道的应用K〓CO〓作催化剂、CH〓I既作促进剂又作部分反应物的由原料甲醇与二氧化碳直接合成碳酸二甲酯工作的基础上，在体系中加入离子液体emimBr后，研究了emimBr对合成反应的影响。

The team will use methods known to prevent harm from administration of anaesthetics, while protecting the patient from pain.

手术小组将使用已知的合适方法，既要让病人无痛状态，又要防止麻醉所引起的伤害。

Anaglyph space can be three-dimensional structure of the three-dimensional shape, can be both a planar shape; can be attached to a carrier, but also relatively independent existence.

浮雕的空间构造可以是三维的立体形态，也可以兼备某种平面形态；既可以依附于某种载体，又可相对独立地存在。

This article focuses on the principles and methods of analogic design in order to create landscape full of historical meaning and time spirit,and to maintain a constant and orderly state in the diversified tide.

本文重点探讨了类推设计的原则和方法，以创造既有历史意味、又赋时代精神的有意义的景观，从而使城市景观在多元化的浪潮中保持恒定有序的状态。

Using analytic continuation in the coupling constant method within the framework of the self-consistent relativistic mean filed theory, we study the energies and the widths of the resonant states in ~(16)O nuclei, and the influences of the coupling constant interval and the Pade approximant order are analyzed.

考察了~(16)O的中子共振态能级，并且详细研究了耦合常数右端点对应能量的变化和Padé多项式的阶数对能量和宽度的影响。结果表明：适当选取耦合常数取值区间可以得到既收敛又稳定的结果。

On the basis of investigating analytic proposition and synthetic proposition, the paper gives some comments on Quine's critique on distinction of the two propositions, illustrating that Quine's critique cannot deny their distinction and only show they are two typical fuzzy conceptions, so we should grasp the dialectical mechanism of their relative distinction and inter-permeation by fuzzy thinking methods.

在考察分析命题与综合命题的基础上，对奎因分析命题与综合命题之区分的批判进行了评述，说明奎因的批判并不能否认分析命题与综合命题的区分，而只是表明了"分析命题"与"综合命题"是两个典型的模糊概念，因而需要运用模糊思维方法去把握它们既相对区分又相互贯通的辩证机理。

Comparing EMD method with traditional FFT method in the analytical process, Hilbert-Huang transformation is found to be superior in performance. Structural response of the warship subjected to underwater explosion is simulated numerically, and EMD method is applied to analyzing the structural impulse signals.

该方法不把信号分解成正弦或余弦函数，因此既能分析线性稳态信号又可用于非线性非平稳信号的分析，且避免了高频干扰结果的出现，被认为是近年来对以Fourier变换为基础的线性和稳态谱分析的一个重大突破。

Frege made language substance analysis object and thethought embraced in language an objective target and he made the truth of cognitionknown by analyzing the thought.For him,thought had its inherence,objectivity,inter-subjecty,analyzability,non space-timity.It was an entity neither material norspiritual.

弗雷格以语言实体为分析客体，以语言所包含的"思想"为客观对象，通过剖析"思想"达到对认识真理的把握，在他看来，思想具有内在性、客观性、主体际性（inter-subjecty）、可分析性、非时空性，是一种既非物质又非精神的"第三实体"。

High and new technology may help us ane harm us.

高新技术对我们既有利又有弊。

The length of angle iron punching fast calibration can be cut, any assembly with a screwdriver, as amended and re-installation, so that it can meet the requirements of the use of carefully planned, can be used to meet emergency needs.

冲孔角钢的长度可按刻度快捷切割、用螺丝任意组装、修正并重新安装，这样它既可满足经周密计划的使用，又可满足紧急使用的需要。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。