难点

This article tells how to implement the SAS on the rotor test tower, dissert its characteristics and shortcomings, discusses the expectation of SAS technology development trend.

本文较为全面地论述了监视报警技术在实际测试工作中的特点、难点及其减少误报率所采取抗干扰技术的新方法。

Because of the complexity of distributed parameter system, control system design is the difficult topic of control theory.

分布参数系统由于其复杂性，控制系统设计一直是控制理论的难点。

Distributive justice is not only the focus issue in contemporary political philosophy, but also in Chinese distribution.

分配正义是当代政治哲学争论的焦点，也是中国当前的热点和难点问题。

To measure the satellite oscillator frequency accurately is of great significance for transmitting time and frequency information by satellite,and the difficult point of the measurement is to deal with the Doppler frequency shift.

星载振荡器频率的测量对利用通信卫星进行标准时间和频率传递有重要的意义，测量的难点是多普勒频移的处理。

The main technical process , inspection and test of the double jacketed pipe splat cooling boiler were disscrtated according as the mostly design parameters , technical requires and fabrication .

依据双套管急冷锅炉的主要设计参数，技术要求及制造实践，论述了主要工艺过程及检验和试验要点，并对制造难点及解决方法作了详细的阐述。

Mathematic model of double four-bar mechanism is very complex,so its speed and acceleration is always the difficult points of the research.

双四杆机构因其数学模型复杂，其速度和加速度曲线一直是研究的难点。

Based on the drilling operation of 4 Wells, this article describes the basic characteristic of coalbed methane and technical difficulties in drilling. Some technical keys as borehole quality, fresh Water drilling,fresh water coring, coal-bed methane protection are solved through application of a series of techno1ogical measures such as optimization of rock bit, optimization of drill stem, optimization of drilling parameters and string coring and etc. The experimental performance, especially in fine-grained ...

本文以四口井的施工为例，着重介绍了煤层气井的特点，并指出了钻煤层气井的几个技术难点，通过钻头优选，钻具优选，钻井参数优选，绳索式取心技术等的现场实施和应用，基本解决了井身质量，清水钻井，清水绳索取心，煤层气保护等几个方面的技术难题，文中还介绍了使用中原油田自行设计的中原9508绳索取心工具的取心情况，尤其是在粉煤层地区的取心情况，这将为今后的煤层气开发打下坚实的基础。

During the course of design and development of distance education system, it is difficult to realize real-time teaching system.

在远程教育系统的设计和开发过程中，实时授课系统是一个难点。

The relativity and real time of input signal is the key and difficulty of ECU design.

输入信号的相关性和实时性是ECU设计的重点和难点。

In reclamation and reuse of black water , to lower the color of effluent is a difficult issue.

在进行厕所污水的再生回用时，如何降低出水色度是个难点。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷