以下为句子列表：
英文: A sub-circuit model for VDMOS is built according to its physical structure.Parameters and formulas describing the device are also derived from this model.Comparing to former results,this model avoids too many technical parameters and simplify the sub-circ
中文: 从VDMOS的物理结构出发建立子电路模型,进而导出描述其交直流特性的参数及模型公式.相对以往文献的结果,该模型避免了过多工艺参数的引入,同时对子电路进行了有效的简化.在参数提取软件中的加载结果表明,该模型结构简单,运算速度快,物理概念清晰,拟合曲线与测试数据符合精度高(直流误差5％以内,交流误差10％以内),适于在电路模拟及参数提取软件中应用.
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英文: Abstract: A detailed analysis is made of the errors made by the system trace, of the mutual relation between trace error and contour error and of the effect on accuracy produced by contour machining, and some computation formulas have been worked out.
中文: 文摘:从进给伺服系统动态响应、滞后特性角度，较详细地分析了跟随误差产生的原因，跟随误差与轮廊误差之间的相互关系和对轮廊加工产生的精度影响，并给出了具体的计算公式。
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英文: Abstract: On the basis of analyzing the scan error of a pentaprism, the principle of scan error compensation is put forward, and the quantized formulas and applying method of compensating the scan error are presented.
中文: 文摘:在分析五棱镜扫描误差的基础上提出了误差补偿原理，并给出了量化补偿公式及误差补偿原理的实现方法。
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英文: Abstract: This paper derives thecalculating formulas to the contact strength and oil-film thickness of the involute spur gear according to hydrodynamic lubrication principle.Through check with test,shows that they may rully replace now available Hertz for
中文: 文摘:根据流体动力润滑原理，推导出了渐开线直齿圆柱齿轮接触强度及油膜厚度的计算公式，通过实验验证，说明它们可以完全分别代替现有的赫芝公式及通森公式。
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英文: Abstract: To decrease bending and twist deformation of non-sym metry extruded sections, a new conception of local extrusion ratio and die band ratio has been set up, and also the formulas for the place of die hole on the ba sis of simulating test.
中文: 文摘:为减小非对称型材挤压的弯扭畸变,在试验研究的基础上,建立了局部挤压比、挤压带系数的概念,挤压筒中心与挤压模孔型中心相对位置的计算式。
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