If the valve body material can be welded, but very different thermal expansion coefficient, or changes in operating temperature range of a larger thread junction closure weld must be honey. 如果阀体的材料是可以焊接的,但膨胀系数差异很大,或者工作温度的变化幅度范围较大,螺纹连接部必须进行蜜封焊。
Thermal Characteristic Simulation of Dual-wavelength Laser Diode Cascaded by Tunnel Junction 隧道带间级联双波长半导体激光器热特性模拟
A Thermal Model for Electrical Measurement of the Peak Junction Temperature of Power Transistors 功率晶体管峰值结温电学测量技术中的热模型一个电学实验的改进
When there is a thermal SiO2 thin film on the surface of the sample, the photovoltage of the sample depends on the characteristics of the epitaxial P-N junction. 当N/P硅外延片表面有高温氧化生成的二氧化硅层时,样品的光电压取决于外延结的特性。
Thermal stability of simultaneously formed tin_xo_y/ tisi_2 for shallow junction device applications 同时形成用于浅结器件的TiNxOy/TiSi2的热稳定性
Research of thyristor's transient thermal impedance and junction temperature rise 晶闸管的瞬态热阻抗及其结温温升的研究
In this paper the improving method for the native thermocouple gauge tubes is given to reduce the thermal inertia of the cold junction to the same degree as the hot junction. 本文提出的改进方法能将国产规管冷端的热惯性降低到与热端接点相当的程度。
Research on the thermal degradation mechanism of ag/ inp Schottky junction Ag/InPSchottky结热退化机理的研究
Studies on the Thermal Damage Mechanisms of a PIN Junction Optoelectronic Diode by Laser 激光对PIN结光电二极管热破坏机理的研究
Transistor thermal spectrum, as a new method, different from the commonly infrared thermogram, is introduced to characterize the non-uniform property of the junction temperature distribution. 晶体管热谱是表示晶体管结温不均匀性的一种与热像图不同的新方法。
Light and thermal stabilities of graded P-I hetero junction in a-si: h solar cell 非晶硅太阳电池中缓变P-I异质结的光、热稳定性的研究
Effect of Thermal Fluctuation in Josephson Junction 约瑟夫逊结中热涨落效应的研究
Based on the Model 4.1 Precision differential thermobalance a micro-differential thermal analytical device was equipped by substituting a plate type thermocouple for the original junction Model. 用平板式热电偶代替点状热电偶,在4.1型示差精密热天平上安装了一个微量差热装置,与原仪器的温控仪,差热放大器、记录器组成微量差热仪。
Electric Field Effect on the Thermal Emission Rate of Holes Trapped at Gold Donor Center in Si P-N Junction 硅P-N结电场对金施主中心空穴热发射率的影响
Thermal characterization of high-power laser diode cascaded by tunnel junction 隧道级联大功率半导体激光器热特性分析
Thermal circuit model of a hybrid integrated power electronic module ( IPEM) is analy-zed in this paper, and then the numerical simulation result of Rth-jc ( the thermal resistance from junction to case) is obtained. 分析了混合封装的电力电子集成模块的热路模型,并且仿真得出了结壳热阻Rth-jc的s数值仿真结果。
So a pulse power burn-in method has been proposed, which measure junction temperature by thermal parameters and control junction temperature by adjusting the power, frequency and duty of pulse to ensure the junction temperature meet the requirement of burn-in. 因此,参考GJB128A-97标准,提出了一种脉冲功率老炼的方法。采用热敏参数法来测量结温,同时调整脉冲的功率、频率和占空比来控制结温,使结温达到老炼要求。
Transition layer applied easing the composition difference and reduce the thermal stress concentration when thermal shock, delayed the growing of cracks in the junction of bonding layer and ceramic layer. 过渡层的应用缓和了涂层中的界面成分的突变,降低了涂层在热震过程中界面处产生的热应力集中,延缓了界面处贯穿裂纹的产生。
Applying this method to a real and typical package and retrieving equivalent thermal resistance network, we obtain a fast and accurate formula for junction temperature in steady state. 本文应用这种电与热等效的方法,对实际的封装模型进行等效热阻网络的提取和简化,得到快速而准确的稳态结温的计算公式。
Velocity and temperature fluctuations of the mixing of hot and cold fluids are the essence to induce thermal fatigue of the tee junction. 冷热流体混合过程产生的速度和温度波动是诱发T型管道热疲劳的本质原因。