Uncertainty analysis of measuring electrical resistance with Wheatstone bridge 惠斯登电桥测电阻实验的不确定度分析
A noticeable problem in measuring resistance using two-armed Bridge 用双臂电桥测电阻时应注意的一个问题
TB. An ideal culture medium was found by using BACTEC MGIT 960 system, general tubes and a LGC number resistance bridge. TB,因此利用BactecMGIT960系统和试管培养对培养基进行重新选择,并用数字电桥检测了它们培养前后的电导变化情况,最后找到了一种较理想的培养基。
The Method of Measuring Grounded Resistance With Rheostat Bridge in Direct Current System is Discussed 用变电阻式电桥电路测量直流系统接地电阻方法探讨
An Error Analysis of Resistance Measurement by Bridge 电桥测电阻误差分析
Under chloride environment, the decline of resistance of concrete bridge is caused by steel corrosion, so the reliability also decline. 在氯离子侵蚀环境下,钢筋混凝土桥梁受弯构件抗力的衰减,主要是由于钢筋腐蚀造成的,因而引起了结构在设计基准期内的可靠性下降。
A Film Resistive Strainometer Measuring Resistance by Bridge Type Voltametry 薄膜式电阻应变计桥式伏安法测电阻
This paper discusses the relation between delicate degree and electricity resistance value of bridge arms of wheatstone bridge from the perspective of theory and experiment with the conclusion reached which shall benefit the improvement of delicate degree and the teaching of such experiment. 本文是从理论和实验两方面讨论惠斯通电桥灵敏度与各桥臂阻值间的关系,所得出的结论可对提高电桥灵敏度及该实验的教学起到指导作用。
Analysis of Heat Resistance Characters of Bridge Pavements 桥面铺装热稳性影响因素的特点分析
On the Importance of Water-resistance on Bridge Surface PROPERTIES AND FLOW RESISTANCE ON SOLID SURFACE 论桥面防水设置的重要性固体表面性质与流体摩阻
Measuring principle and sensitivity of non-balanced bridge is analyzed. A method of measuring temperature coefficient of resistance by this bridge has been discussed in this paper result is accurate. 本文分析了非平衡电桥的测量原理及灵敏度,提出了一种测量电阻温度系数的方法,实测结果说明该方法是正确的。
In addition, the test can improve directly the theory of wind resistance design to bridge and improve the code of wind resistance design. 此外,风洞试验还能为桥梁抗风设计理论和规范的改进提供最直接有效的依据。
The dynamic characteristic of bridge is an important parameter not only for carrying capacity evaluation but also for earthquake resistance analysis of bridge. 桥梁结构的动力特性是桥梁承载能力评定的重要参数,同时也是识别桥梁结构工作性能和桥梁抗震分析的重要参数。
The relation between the track longitudinal displacement resistance, the bridge corresponding displacement and the vertical load on track can be determined by a series of relative displacements between the girder and the rail and the measured forces. 轨道纵向位移阻力与梁轨相对位移和轨道竖向受载的关系,可采用梁体与钢轨之间产生一系列的相对位移、并测定钢轨的受力大小来确定。
In view Of the relationships Of shrinking force with its radius and current and the relationship Of resistance of bridge with the radius, the method is designed. 在研究了电磁收缩力和液桥半径及短路电流的关系、液桥电阻和液桥半径的关系之后,设计了本文的方案。
This paper demonstrates what factors are related to the sensitivity in theory, so that we can find out various methods of improving the accuracy when measuring resistance with single bridge of direct current. 本文从理论上论证找到了灵敏度与哪些因素有关,从而找到了提高直流单电桥测电阻准确度的各种方法。
The second is to provide scientific bases and effective ways for vibration resistance design of bridge. 并为桥梁抗震设计提供科学依据和有效手段。
Adopting frequency-change speed control to rotor series resistance speed of bridge crane, can make the bride crane convenient to use and reduce the maintain dose and appeal to the worst circumstance. 对桥式吊车转子串电阻调速采用变频调速控制,使桥式吊车的使用更方便、维护量减小,更能适应恶劣环境。
The Small Resistance two Bridge Researches of Direct Current of Measurement Technique 微小电阻直流双电桥测量方法研究
Since the earthquake resistance of bridge structure and seismic effect are very difficult to be estimated accurately, there are many bridges that have been damaged or collapsed in the earthquake. 由于人们尚难准确估计桥梁结构的抗震能力和地震作用,因而,桥梁结构在地震中破坏或倒塌的例子很多。
Controling portable resistance ratio bridge of V/ F converter with single chip micro& computer 用单片机控制V/F转换器的便携式电阻比电桥
The portable resistance ratio bridge using v/ f inverter as a/ d converter 用V/F变换器作A/D转换器的便携式电阻比电桥
Hardware compensation is using the fixed resistors, thermistors such as for series and parallel of piezoresistive resistance or the bridge to achieve temperature compensation. 硬件补偿即利用固定电阻、热敏电阻等与压敏电阻或桥路进行串并联实现温度补偿。
Due to the high cost and constraints, the fire resistance test of bridge is difficult. 由于火灾试验的费用较高以及火灾试验条件的限制,对桥梁抗火性能进行试验研究存在困难。
However, when measuring micro resistance, Kelvin bridge method which is used to measuring low resistance is not applicable. So we need a system to measure micro resistance. 但是,在测量微电阻时,常用的测量小电阻的开尔文电桥就无法满足要求,所以需要一种测量微电阻的系统。
According to current wind resistance of bridge design specifications in china, the aerodynamic characteristics of mojiang bridge strengthen beam has be calculated. 4. 并根据我国现行桥梁设计规范研究了墨江大桥加劲梁的空气动力特性。得到研究抖振问题所需要的加劲梁气动参数。
The failure models may be change for the resistance of existing bridge deteriorating with time. 在役钢筋混凝土桥梁构件的抗力随时间是不断衰减的,失效模式也可能发生改变。
Wind resistance of long-span bridge has become a hot spot in civil engineering. 大跨度桥梁的抗风问题是土木工程学中的一个热点问题。
In the application, two important transformer bridges are concerned& resistance bridge and capacitance bridge. 高精度比例变压器主要应用于两类重要的变压器电桥&交流电阻电桥和电容电桥。
In the situation of demand on low precision, using resistance and capacitance bridge circuit or charge control could mitigate hysteresis. 对于精度要求不高的场合,可采用电阻和电容桥路或者电荷控制等方法来削弱回滞。