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design   parameter
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  相似匹配句对
     Parameter design of spares
     零件的参数设计
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     Parameter Sign Design
     参数化图符设计
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     To design the G.
     在设计G.
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     ’s design.
     的设计,平均性能提高26%。
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     conclusion  ①.
     结论  ①.
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In this paper the formulas for calculation of response time and overshoot due to steering displacement step input are derived by means of the mathematical model for a vehicle as a system of two degrees of freedom. This leads to the study of the relationship between vehicle basic design parameters and dynamic response. Finally the influence of the rate of steering input on the response time measured are discussed.

本文根据二自由度汽车数学模型导出了计算转向位移阶跃输入时反应时间和超调量的计算公式。以便研究汽车基本设计参数与动态反应之间的关系。最后讨论了方向盘起跃速度对汽车反应时间量测的影响。

According to the actual practical condition of acousto-optical deflectors, by solving Dixon equations of abnormal Bragg diffraction under the condition of fixed incident light direction 1)1, the functional dependences of the ultrasonic wave direction (?)a. which gave rise the acousto-optical interaction and the diffraction light direction (?)2 on the frequency f are obtained. From the (?)a-f relationship, the important design parameters, i.e., the Bragg bandwidth and the transducer length, can be...

According to the actual practical condition of acousto-optical deflectors, by solving Dixon equations of abnormal Bragg diffraction under the condition of fixed incident light direction 1)1, the functional dependences of the ultrasonic wave direction (?)a. which gave rise the acousto-optical interaction and the diffraction light direction (?)2 on the frequency f are obtained. From the (?)a-f relationship, the important design parameters, i.e., the Bragg bandwidth and the transducer length, can be determined accurately. The (?)a-f relationship shows good linearity, hence the previously proposed corrections on scanning linearity appear to be unnecessary.

按声光偏转器的实际使用情况在入射光方向固定不变的条件下求解反常布拉格绕射的Dixon方程,得到起作用超声方向和绕射光方向随频率f的变化关系。由-f关系可精确决定声光偏转器的布拉格带宽和换能器长度等重要设计参数。所解出的-f关系具有良好的线性,因而以往所作关于矫正扫描线性的探讨显得多余。

A direct computer method for producing the ship lines from given design parameters is presented.The program based on this method enables the user to vary the hull shape to a certain extent by modifying some controllable variables. With a CJ709 computer, the computing time for each and all of the changes is about 40 seconds, so the method recommended here is applicable to interactive graphics.A chain of 2-4 polynomials is used for representing the waterline with no extraneous inflection point, while...

A direct computer method for producing the ship lines from given design parameters is presented.The program based on this method enables the user to vary the hull shape to a certain extent by modifying some controllable variables. With a CJ709 computer, the computing time for each and all of the changes is about 40 seconds, so the method recommended here is applicable to interactive graphics.A chain of 2-4 polynomials is used for representing the waterline with no extraneous inflection point, while the draft functions match each other. Consequently, the fairness of lines is guarranteed to a considerable extent.The method of designing the stem and the stern lines is also described herein.At the end of this paper the tank test results of the three models with mathematical lines produced by the program of the recommended method are given.

本文提出一种简易、直观、迅速、灵活的船体线型数学设计方法。在CJ 709机上,计算一个船型约40秒钟。此方法可用于交互设计系统,使用者按自己的设计意图变化或修改船型数次,即可获得相当满意的结果。 此方法是吃水函数法的一种具体应用。它采用多项式链表达水线,有良好的表达能力,且水线光滑,无多余拐点。对于水线面面积曲线提出了一种特别的设计方法,并使用派生参数,成功地解决了诸吃水函数之间的协调配合,保证线型的光顺。此外,文中简要地讨论了船体轮廓线设计方法和派生参数的处理。最后,还给出三艘用上法设计的船模的阻力试验结果。

 
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