根据材料的极限变形，导出管轴临界弯曲半径的计算方法。
According to the limit deformation, a method for calculation of the critical curvature of the tube is developed.
本文根据理论分析和实际测定推导出管坯壁厚计算公式及确定管坯壁厚的计算方法。
Formulas for calculating the shell wall thick-ness are derived and a method for calculating the wall thickness is also obtained based on related theoretical analyses and actual measuring results.
本文从双向负阻晶体管(BNRT)的等效电路出发，导出了BNRT的工作模式。
In this paper, the operation modes of the BNRT have been derived from its equivalent circuit.
本文导出了平面螺管几何参数之间的关系及换热准则方程，并对这种换热器进行了设计计算和特点分析。
The relations between the geometric parameters, as well as the heat transfer criterion equations, of the plane spiral-tube are derived.
首先推导出该类管的控制方程。
从细磁通量管运动方程组导出了特征速度、特征线及其相容关系。
The characteristic velocities and the compatibility relations along characteristics are derived from the system of equations for the motion of thin magnetic flux tubes.
采用金属体积不变条件，推导出金属波纹管液压胀形工艺中的管坯长度计算公式，实验表明，计算公式准确实用。
In this paper, the blank length formulate of bellows hydraulic shaping are derived. Verified by experiments, these formulate are very accurate and effective.
分析了在ld型冷轧管机上轧管时的轧制压力，导出了轧制压力等力参数的计算方法。
The rolling pressure on a ld cold tube mill is analyzed and the calculating method of technical parameters such as rolling pressure is derived.
在裸眼完井产能评价模型的基础上进一步推导出火山岩气藏射孔完井和割缝衬管完井产能评价模型。
Through the open hole completion productivity evaluation model, respectively derive perforated completion and slotted completion productivity evaluation models.
借助双极传输理论导出了高速绝缘栅双极晶体管(IGBT)传输特性的物理模型。
The high speed insulated gate bipolar transistor (IGBT) transport model is derived by ambipolar transport theory in this paper.
导出了加速寿命公式，利用该公式，可以快速地判定氦-氖激光管的寿命特征。
An equation for lifetime shortening is derived, which is used to determine readily the lifetime characteristics of He-Ne lasers.
本文用雷诺方程推导出计算轴承压力分布的差分公式；并以此为依据，计算管磨机主轴承轴瓦的压力分布；并为轴瓦的结构设计提出建议。
Using Reynolds equation to derivate the formula for calculating bearing pressure distribution, then calculate pressure distribution of main bearing shell of tube mill on the basis of this formula.
从流体的动量方程出发，考虑流体和管道的耦合，推导出输运流体海洋立管的偏微分运动方程。
Based on the flow moment equation, developed the lateral motion equation of a Marine riser by considering the coupling of the fluid and the pipe.
本文通过声波在穿孔声管中传播特性的研究，导出了声波在穿孔声管中传播的声场传递矩阵。
The sonic field transmission matrixes of perforated absorbent pipe is given after the transmission performance of perforated pipe is studied.
本文运用刚体力学理论阐明了胀管器的工作机理，并导出相关参量的计算公式。
The working principle of boiler tube expander is elaborated and the formula for calculating the related parameters is derived in this paper according to the theory of mechanics of rigid body.
文中通过对胀管器的运动分析，导出胀杆的轴向进量计算方法。
A method for calculating the axial feed of expanding rod is also advanced through the analysis of expander's motion.
将覆盖层单元近似为粘弹性圆柱管，导出轴对称波的特征方程。
Approximating the unit of coating as hollow viscoelastic cylindrical shell, an eigen equation of the axisymmetric waves is derived.
文章根据彩色显像管的工作原理，对会聚磁组件调整电子束产生的移动量进行模拟推导计算，推导出的公式为新产品的开发提供了有益的途径。
According to the working principle of color kinescope, the article deduces the formula that the purity convergence magnet adjusts the electron beam moving distance.
结果发现，当转动电解液从碳纳米管膜的表面流过时，也会在膜的两端诱导出电势，该电势的大小与电解液的种类、转速、质量浓度和温度等有关。
It is indicated that the voltage was induced in the films when the rotational electrolytes flow on the carbon nanotube films surface due to electronic friction and electron drag effect.
然后通过总势能与相应薄圆柱壳的应变能比较，推导出了单壁碳纳米管杨氏模量的计算公式。
The computing formulae of the Young's moduli of SWCNT are obtained by comparing the total molecular potential energy of a SWCNT with the strain energy of a corresponding cylindrical thin shell.
采用力平衡法推导出了这种复合管的短期爆破压力计算公式。
The main research results are as follows:(1)Based on strength equivalent method, short-time burst pressure formula of PSP was deduced.
文中导出了动态导通比参数、半导体开关管拓扑以及变压器理想模型的对偶形式。
The duality of transformers (ideal and perfect models) is investigated. In addition, the duality relationships of duty ratio parameters and semiconductor-switch topologies are also given.
本文通过对LD - 15型轧管机的工作机架进行运动学分析，推导出主机头的运动加速度的解析表达式。
Via the kinematical analysis of the working frame of LD-15 tube rolling mill, the analysis expression of the acceleration has been derived.
给出了快速二极管软度K的新定义；推导出快速二极管反向过电压与软度K的关系，经试验证实了软度K与反向过电压的对应关系。
A new definition of reverse recovery softness K of fast diodes is given, and the relationship of reverse over voltage to the softness K of the fast diode is derived and verified by experiment.
基于流体质量、动量守恒导出了单管球塞气举和分体式柱塞气举采用“压低液面”卸载的数学模型；
Based on the mass and momentum conservations of fluid, the mathematical model of Two-Piece plunger lift and single-string pig lift which unload by pressing fluid level down is derived.
以实验数据为基础，从工程设计的角度推导出二极管传感器的结构和设计公式，并给出了设计实例。
Based on experiment data, a diode temperature sensor structure and its design formulas are presented from engineering point of view. A design example and experiment results are also given.
最后，由电子运动方程出发，推导出了简化了的螺旋波纹波导回旋行波管的注波互作用色散方程。
Finally, the simplified beam-wave interaction dispersion equation of Gyro-TWT with a spiral corrugated waveguide was obtained from the equations for electronic locomotion.
两根塑料管接在储水箱上，一根管子用来让水流入，一根用来导出水。
Two rubber pipes are attached to the water storage tank. One pipe lets water flow into the system. The other lets water flow out.
利用场论说推导出的非线性电阻特性普遍公式 ，对可作为非线性电阻的晶体二极管 ，推导出电流作为电压的函数解析式 。
Electric current as analytic expression of the function of electric voltage can be derived from crystal diode as non linear resistance.
利用场论说推导出的非线性电阻特性普遍公式 ，对可作为非线性电阻的晶体二极管 ，推导出电流作为电压的函数解析式 。
Electric current as analytic expression of the function of electric voltage can be derived from crystal diode as non linear resistance.
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