Many researchers fault case-control work as being a weak method for showing direct causality, especially because it is subject to substantial recall bias.
很多研究员都指责案例对照法不是展现因果关系直接有力的方法，尤其因为它受制于大量的记忆误差。
Combined with natural gas test work, the quality control method in natural gas chemical laboratory was discussed.
结合天然气检测工作实际情况，对天然气检测实验室质量控制方式进行了探讨。
Parsons recommended a method of automatic machine control that would guide a milling cutter to produce a "thru-axis curve" in order to generate smooth profiles on work pieces.
为了在工件上加工光滑的轮廓，帕森提出了一种自动的机床控制方式，它能够引导铣床刀具加工出一种“过轴曲线”。
Conclusion the model provides a reliable method for the dispensary to evaluate and predict the work of tuberculosis control in Guangdong province.
结论该模型的建立为广东省结核病控制工作的评价、预测化疗结局提供了一个较为可靠的方法。
This paper introduce design method and work principle on the application of SCM to aircraft gun projecting control, and provide hardware circuit and software design process.
本文主要介绍了单片机在航炮射弹控制中的设计方法和工作原理，给出了硬件电路和软件设计过程。
The basic work principle and control method of hybrid cascaded multilevel inverters are introduced.
介绍了混合级联式多电平逆变器的基本工作原理与控制方法。
Their work principle, control method, interconnection method as well as interface with the outside data terminal and with the physiology numeral signal has detailedly been described.
本文详细描述了它们的工作原理、控制方法、相互连接方法以及与外部数据终端和与生理数字信号的接口。
This article introduces the method of humidity control used with Philips humidity-sensitive capacitance sensor, and the basic principle, measuring circle, work frequency, response time etc.
本文介绍了飞利浦湿敏电容传感器进行湿度控制的方法，包括它的基本原理、测量电路、工作频率、响应时间和滞后现象。
And the intelligent method is pointed out to deal with the antinomy of the performance and robustness of the control systems based on the problem in the industry control practice work.
通过工业控制实践工作中所遇到的问题，指出了采用智能的方法来处理控制系统的性能与鲁棒性之间的矛盾。
This paper mainly introduces the control method of hydraulic system's pollution source and the key of control skill, and provides important reference for actual work in future.
文章介绍了液压系统污染源的控制方法和关键控制技术的应用，可为今后的实际工作提供重要的帮助。
In order to improve the control performance and avoid a great deal of adjusting work of the parameters, we applied chaos optimization method in design of fuzzy controller firstly.
为了避免模糊控制器设计过程中参数的大量调试工作，并使其具有最佳的控制性能，本文首次将混沌优化方法应用于模糊控制器参数设计。
It is a feasible method to use intelligent control theory, and in this paper, the primary work is introduce intelligent control method to the Ac motor timing.
采用智能控制方法是一个切实可行的思路，本文的主要工作就是把智能控制方法引入到交流电机调速中来。
The work principle, circuit structure and realization method of control of the ML frequency converter system are discussed. The system USES PWM rectifier to realize reactive power compensation.
论述了运用PWM整流器实现无功功率补偿的ML变频系统的工作原理、电路结构和控制的实现方法。
Based on the procedure control, introducing the specific quality management technology into data collection work, the author introduces the method and measures for the above problems.
从过程控制的观点出发，将具体的质量管理技术引进到数据采集作业中，提出了解决上述难点的方法和措施。
This work demonstrates the efficient method of process control based on the batch raw sugar crystalliser model to improve the crystal rate and shorten the crystal time.
本文的主要工作是基于蔗糖结晶机理模型的基础上研究蔗糖结晶过程控制的有效方法，以提高蔗糖结晶的速度、缩短煮糖时间、节约能源和提高产品质量。
The work principle of the control circuit for inductance discharge device and the method of high effective device of finger-fork discharge are introduced.
本文通过臭氧对汽车排放的影响和电感放电的特征的分析，介绍了新型电感放电装置控制电路的工作原理和高效放电指叉的工作方法。
The written method statement must identify the information that authorized employees must know in order to control hazardous energy during the work.
书面的施工方案须明确所授权员工必须了解工作中控制危险能量源的方法。
According to the complicated work procedure and low control accuracy of Hydro-Damper on Cement Rotary Kilns, a Fuzzy control method is introduced.
针对水泥回转窑液压挡轮工作过程的复杂性、控制精度要求不高的特性，提出水泥回转窑液压挡轮系统控制的模糊智能化方法。
With regard to flux control and check valve, based on its structure and work principle, presented the method of type selection.
对自力式限流止回阀，在分析其结构和工作原理的基础上，提出了选型方法。
The technique and method in radiological measuring for quality control has been introduced, in accordance with the practical work.
结合放射性检测中的实际工作，介绍了有关辐射测量质量保证的技术与方法。
The work method and control system of circular winding equipment is described.
分析环形缠绕机的工作特点和环形缠绕机控制系统设计流程。
The basic research idea, content and method to carry out a study on standardize the work of disease prevention and control have been briefly introduce in this paper.
该文介绍了开展疾病预防控制工作规范化研究的基本思路、内容和方法。
Performance experiments about ZY47 pressure -difference control valve and ZL47 flux control valve have been done, based on their structure and work principle, presented the method of type selection.
对ZY 47型自力式压差控制阀和ZL47型流量控制阀进行了性能实验，并依据它们的结构特点和工作原理，提出了选型方法。
Based on the demand of technique of the project, exact performance of control system is given, conclusions why traditional can not work is explained and solving method is introduced.
通过对电热前床工艺需求的具体介绍，给出控制需要达到的具体性能指标，通过分析传统控制方法在应用上的欠缺，得出应用智能基础控制方法的必要性。
In this paper, the author introduces the basic work principles and applications for the receiver of color TV, and shows the method of mending I2C bus control circuit of the receiver of color TV.
介绍了彩色电视接收机中i ~ 2c总线的基本工作原理及应用，提出检修彩色电视接收机中i ~ 2c总线控制电路的方法。
The operation test marks were valued by using the work single configuration method in CENTUM sequential control table.
操作考核成绩评定使用CENTUM顺控表的工作单组态方法。
Preliminary experiments show that the smart ultrasonic generator based on the new method can quickly and accurately frequency track, and can work well with constant amplitude control.
实验结果表明，研制的智能超声波发生器频率跟踪迅速准确，并能实现振动系统的恒定振幅控制，可以实现振动系统的自动运行。
First of all, the paper USES work Load Point assessment system, work breakdown structure and critical path method to build the control and monitor system based on the work Load Point system.
首先，本文运用工作负荷点系统的评估系统、项目分解结构以及关键路线法构建了基于工作负荷点系统的进度度量监控体系。
First of all, the paper USES work Load Point assessment system, work breakdown structure and critical path method to build the control and monitor system based on the work Load Point system.
首先，本文运用工作负荷点系统的评估系统、项目分解结构以及关键路线法构建了基于工作负荷点系统的进度度量监控体系。
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