装置

However, because of the manual operation mode, which makes dataread and record randomly and trustlessly, and the diverseness of the detector'scapabilities, the current detecting ways for the train tail devices can't confirm theusing devices well worked. Making sure the reliability of the train tail devices andimproving the working safety have been an urgent problem to be resolved.

但现有的列尾装置检测，均由人工手动完成，读数、记录、随意性强，可靠性低，更由于现场检测人员业务素质参差不齐，责任心有高有低，不能保证投入运行的列尾装置均能正常使用，因此，如何确保列尾装置的可靠性，提高行车安全，已成为急迫需要解决的一个问题。

Anti-static design Blow-out proof stem Pressure balance device on the ball Double stem packing and two-pieces shrapnel device Clearance device on the body

阀杆防爆出装置。◇钢球上设计有压力平衡孔。◇双层阀杆填料与两片蝶性弹片装置。◇阀体上设计清洁阀腔装置。

Low sensitivity was equivalent to the United States Transportation Security Administration setting for regular security, and high sensitivity was equivalent to its standard for high security.

低敏感度装置的性能相当于美国运输安全管理局针对普通安全装置的要求，而高敏感度装置的性能则相当于美国运输管理局高安全的标准。

A thermal expansivity test device consisting of hating unit, attemperating unit, displacement transducer, recorder and so on, was developed to determine the thermal expansivity of new sand, clay-beaded sand, sodium silicate sand, resin bonded sand with th

摘要铸造用砂热膨胀性测试装置，由加热装置、温控装置、移位传感器、记录仪等组成，可实现铸造用原砂（亦可用于粘土型砂、水玻璃型砂、树脂型砂等）的随温和等温热膨胀性测试。

A thermal expansivity test device consisting of hating unit, attemperating unit, displacement transducer, recorder and so on, was developed to determine the thermal expansivity of new sand, clay-beaded sand, sodium silicate sand, resin bonded sand with the temperature or isothermally.

摘要铸造用砂热膨胀性测试装置，由加热装置、温控装置、移位传感器、记录仪等组成，可实现铸造用原砂（亦可用于粘土型砂、水玻璃型砂、树脂型砂等）的随温和等温热膨胀性测试。

The system configuration is simple and practical, which is convenient to study and train for experimentalist. It can match different devices or different soft wares of one device to take experiment. This system is efficient, economic and helpful to enhance the operation ability and technique level of students and trainees.

系统配置简单实用，实验者随时可以进行学习和培训，可以配合不同的保护测控装置进行实验，也可通过下载不同保护测控装置的软件在一台装置上进行实验，简单高效，经济实用，可以大大提高学生和培训人员的动手能力和技术水平。

Children should be assessed before implantation, while on the device, and after explantation.

应在植入装置前、应用装置治疗期间及摘除装置后，对患儿进行评价。

This paper in view of present crude oil units running situation and the existence prominent question, in cooer with progress of production has carried out the corrosion mechanism research, the anticorrosion measure and the corrosion actually tests and analysis, the security and reliability analysis and the life forecast research, with the research of out and inner our country and the production actuality ,which provides a practical and feasible base for guaranteeing the equipment in the long-term and steady safe operation.

本文针对目前国内稠油加工常减压装置的生产运行现状和存在的突出问题，结合国内外研究工作和生产实际开展了稠油加工装置故障树分析、腐蚀机理、防腐措施、腐蚀实验、安全可靠性分析和寿命预测等方面的研究工作，为提高我国石油炼化装置的安全可靠性提供了理论基础和新的方法。

Studied present measuring methods" advantages and disadvantages, and presented the necessity and importance of researching propellant transient heat transfer.2.according to 130 and aeronautic 90 rocket projectiles" structure, analysed and acquired physical and mathematical models for propellant transient heat transfer, also designed propellant temperature field simulation units for test.3.acquired discrete transient heat balance equation and temperature calculation program, and gave contrasting curves between experimental temperature values and program calculating temperature values as well as maximum errors and average square root errors between them.4.by programs based on the first class boundary condition, worked out temperature distribution in propellant temperature field simulation units at different time, analysed temperature field distribution law and main elements affecting heat transfer, acquired propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.5.established transient heat transfer mathematical model and temperature calculation program for the third class boundary condition, drew contrasting curves between temperature experimental values and calculation values and gave maximum errors and average square root errors between them, got temperature distribution in the simulation unit at different time and main elements affecting heat conduction, figured out propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.

分析了现有测试方法的优缺点，提出了研究推进剂瞬态导热的必要性和重要性。 2。根据130和航90两种火箭弹的结构，分析得到了推进剂传热的物理模型和数学模型，设计了推进剂温度场模拟实验装置。 3。得到了离散形式的瞬态热平衡方程和温度场计算程序，给出了实验温度与程序计算温度值的对比曲线及其最大偏差与均方差。 4。利用程序求出了第一类边界条件下、不同时刻推进剂温度场模拟装置中的温度分布，分析了温度场的分布规律和影响传热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处的温度时间曲线并给出了两者之间的最大偏差与均方差。 5。建立了第三类边界条件下的瞬态导热数学模型和温度计算程序，求出了温度实测值与计算值的对比曲线并给出了两者之间的最大偏差与均方差，得到了不同时刻温度场模拟装置的温度分布与影响导热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处温度及两者之间的最大偏差与均方差，讨论并确定了能代表130和航90推进剂温度的特征点的位置。

This reliable and precise mechanism combined the light feel of the Vienna action with the forcefulness of the English action, both popular at the time.

这种可靠、精确的机械装置结合了当时非常流行的轻柔的维也纳机械装置和强有力的英国机械装置。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。