反

This paper first delimits strictly the two antonymous morphemeswhich forms the antonymous morphemic compounding words from the aspects of systemetic,semantic, grammatic, phonetic and pragmatic standards, and gathers examples from ModernChinese Dictionary (enlarged edition, 2002) and Modern Chinese Norm Dictionary andmakes a quantitative study combining the examples.

本文首先从系统标准、语义标准、语法标准、语音标准、语用标准五方面对构成反义语素合成词的两个处于反义关系中的反义语素进行严格界定，并以此标准从《现代汉语词典》(2002年增补本)及《现代汉语规范词典》中收集词例，结合词例进行定量研究。

The too strict definition presents a misleading picture of opposites, which are in fact of various types and commonly used in the natural language, thereby hindering the inclusive study of antonymy.

对反义关系的这种过于严格的定义显然有悖于自然语言中种种语义对立关系普遍存在并大量使用这一事实，从而不利于对反义关系的全面研究本文认为词与词之间只要存在较强的语义对立关系，不论其是否可分级，均应视为构成反义关系。

Three expert systems for inversion were applied into practical engineering. Basing on the formulation of apparent resistivity in whole space, the curves of time vs. response which were gotten from practical exploring were transformed into the curves of depth vs. apparent resistivity by VC program. The data which were gotten from measurement line on working face in tunnel were transformed into the section map of depth vs. apparent resistivity. The result shows that expert system for inversion is feasible.

将三种反演专家系统应用于实际工程中，同时根据全空间视电阻率公式，采用VC编程的方法，将实际工程探测所得到的时间——响应曲线转化为深度——视电阻率曲线，将掌子面测线数据转化为深度——视电阻率断面图，对比两种计算方法的结果，说明反演专家系统在瞬变电磁反演中的可行性

The discovery of aerobic denitrifying bacteria, autotrophic denitrifying bacteria, and denitrifying Phosphorus-removing Bacteria were also mentioned in this paper.

另外，还论述了近年来发现的有氧反硝化细菌、自养反硝化细菌及反硝化除磷细菌等方面的研究进展。

P-wave AVO inversion is a complicated constrained nonlinear optimization problem, which is better achieved using global optimization methods.

AVO反演是一个非线性优化问题，因此采用非线性的反演方法，其解空间的性质、状态应优于线性反演方法。

Did the string slow down the Avocet so that it was caught by the Peregrine Falcon?

是反嘴鹬被缠住飞得慢被捉，还是游隼因反嘴鹬连住风筝才抓不紧，反嘴鹬掉回水面？

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

The method comprises the following steps: according to the raw water quality, the change of the number of bacteria inside the sedimentation tank and the water quality of the backflush yielding water, the backflush yielding water in the sedimentation tank is collected and deposited in a backflush phase of a working period; supernatant fluid containing mass active bacteria and soluble nutrient elements reflow to the sedimentation tank; total or partial sediment containing soluble nutrient elements in an underlayer reflow to the sedimentation tank and is reutilized by mass microorganisms in the sedimentation tank, thereby replenishing the nutrient substrate needed for microorganism growth, proliferation and metabolism under the condition of the low nutrition substrate, and maintaining the ecological stability in the sedimentation tank.

该方法根据原水水质和生物滤池内部细菌数量的变化以及反冲洗出水的水质，将生物滤池工作周期中反冲洗阶段的反冲洗出水收集并沉淀，将其含有大量活性细菌和溶解性营养元素的上清液回流至生物滤池，下层含有不溶性营养物质的沉淀全部或部分回流至生物滤池，被生物滤池当中的大量存在的微生物重新利用，从而补充在低营养基质条件下，微生物生长、增殖和新陈代谢所必需的营养基质，维持生物滤池当中的生态稳定。

Symbol with a special meaning can be matched, but to do so it must be prefixed with the backslash character (this includes the backslash character itself: to match one backslash in the target, the regular expression should include '\\').

数字符有特殊的含义，以经常性的表述。A符号与a特殊的意义可匹配，但这样做必须前缀的反斜杠字符(this包括反斜杠字符本身：匹配一个反斜杠的目标，应该经常表达包括'\\')。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。