When refrigeration in this temperature range is realized by using single stage refrigerator with mixed refrigerant , not only the structure of the refrigerator is simplified , thus the operation reliability of the refrigerator is increased , but also the refrigerator can operate with a higher thermodynamic efficiency than that of conventional ones 采用单级压缩的混合工质制冷机进行该温区的深度制冷，不但可以使制冷机的结构得到简化，提高制冷机运行的可靠性，而且还可以获得更高的热力学效率。
This program can predict the wall temperature 、 internal wall heat tranfer coefficient 、 fluid temperature and entropy profile along the water wall . all of these provide an important foundation for designing this type of water wall structure to ensure the safety of the boiler operation . this hydrodynamic calculation program and the results can be used to analyze operation reliability and structure design of water wall system 利用所开发的程序对设计的超临界cfb进行了计算，给出不同负荷下，水冷壁出口工质温度分布，水冷壁受热面不同位置处的金属壁温、内壁放热系数、流体温度焓值分布，以及不同管子的流动压降等结果，为分析锅炉工作可靠性及水冷壁系统的结构设计提供了重要依据。
Design philosophy of hardware and software is established . the paper bases control algorithm of operator and control program diagram on thorough investigation into truck crane operation reliability action flow , which makes sure of accurate and effective control over handle and accelerograph and achieves test process automatization 文章在深入研究汽车起重机作业可靠性试验动作流程的基础上确定了对执行机构的控制算法，并给出控制程序框图，准确有效地实现了对操纵手柄及油门的控制，达到试验过程自动控制的目的。
Using this equipment , the residual current protection test and operation reliability test were be done . and the failure reason of rcd was analysed . the method to improved the reliabilty level of rcd was introduce . so the reliability study can be processed 应用剩余电流动作保护器可靠性试验设备进行了成功率验证试验和操作故障率可靠性验证试验，分析了剩余电流动作保护器的故障原因，提出了提高剩余电流动作保护器可靠性的方法，从而真正地将可靠性研究工作付诸实施。
The corrugated tank made of high quality cold - rolled - steel sheet manufactured with special production line . it can swell up or shrink compensating the oil from atmosphere . protect and delay the oil and the insulation against degradation , therefore enhance the operation reliability and free of maintenance under normal conditions 全密封变压器与普通油浸式变压器相比，取消了储油柜，由波纹油箱的波翅代替油管作为冷却散热元件，波纹油箱由优质冷轧薄钢板在专用生产线上制造，波翅可以随变压器油体积的胀缩而胀缩，从而使变压器内部与大气隔绝，防止和减缓油层的劣化和绝缘受潮，增强运行可靠性，正常运行免维护。
The dissertation goes deep into the tube failure mechanism and the reliability theory in order to improve the diagnosis and monitor veracity and tone up the operation reliability . the parameters of the tube life lapse is expressed by the weibull distribution function and the effect of the parameters on the life lapse is derived . and it is confirmed the operation temperature and the pressure and the service time are the main factors of the life lapse 首先，本文为了提高故障诊断和状态监测的准确性和增强锅炉运行的可靠性，深入探讨了锅炉“四管”失效机理和可靠性理论，将管道的寿命损伤参数通过威布尔分布函数进行表征得出各参数对失效速度的影响，确认运行温度、压力和服役时间是寿命损伤的主要因素。
Our electric wall saw ws - 350s , ws - 300s is manufactured with our original idea , high technology and many years experience in making and construction works . it has plenty of advantages , like as strong power , user - friendly , versatile and safe , operation reliability , high performance and efficiency , long lasting etc . all our products have been widely used in drilling cutting , construction project , concrete drilling and chiselling wall sawing floor sawing concrete crushing and bursting Ws - 300系列电动墙锯，钢筋混凝土切割机由我公司研制生产，采用瑞士超强动力三相电机，输入功率5000w ，输出功率4000w ，采用热保磁保双重保护，进给切深0 - 300mm ，自动进给
It has plenty of advantages , like as strong power , user - friendly , versatile and safe , operation reliability , high performance and efficiency , long lasting etc . all our products have been widely used in drilling cutting , construction project , concrete drilling and chiselling wall sawing floor sawing concrete crushing and bursting Ews - 300 ews - 200系列电动墙锯，钢筋混凝土切割机由我公司研制生产，采用德国超强墙锯机头，输入功率4300w ，输出功率3600w ，采用摩擦离合器过流保护器电源自动检测三重
According to the sample theory , applied the time terminated test plan , the reliability compliance test plan was brought forward . the reliability compliance test plan was divided into two parts , residual current protection test and operation reliability test . in this paper , the preparation of sample , the test plan , the failure criterion and the program of reliability test were introduced 本文由抽样理论，采用定时截尾试验方案确定了剩余电流动作保护器的可靠性验证试验方案，剩余电流动作保护器的可靠性验证试验由成功率验证试验和故障率验证试验组成；本文还给出了剩余电流动作保护器可靠性验证试验的试品准备和试验条件、试验检测方法、失效判据，以及可靠性验证程序。
The dissertation goes deep into the tube failure mechanism and the reliability theory in order to improve the diagnosis and monitor veracity and tone up the operation reliability . the parameters of the tube life lapse is expressed by the larson - miller function and the effect of the parameters on the life is derived . and it is confirmed the operation temperature and the pressure and the service time are the main factors of the life lapse 首先，本文为了提高故障诊断和状态检测的准确性和增强锅炉运行的可靠性，深入探讨了锅炉过热器管和再热器管失效机理和可靠性理论，将管道的寿命损伤通过拟合的larson ? miller函数进行表征，从而得出各参数对寿命的影响，确认运行温度、工作应力和服役时间是寿命损伤的主要因素。
