查询词典 spiral

The principle,testing method and mould for measuring the thermoplastics fluidity and cavity pressure by Archimedean spiral method are introduced.

主要介绍了阿基米德螺旋线法测定热塑性塑料流动性能和模腔压力的原理、测定方法和工具，并对注射成型系数的影响因素进行了探讨，可供生产实践参

The mathematical model was verified in experiment with the method of indirect squeeze cast Archimedean spiral proof sample. And the experimental results show that the maximum deviation between the theoretical value and measured value is less than 8%. This model can be used for quantitative analysis and estimating effects of the craft factors on the filling ability, and can also predict the maximum filling length. It has the important reference value to design the semi-solid alloy rheoforming technology and mould.

采用间接挤压铸造阿基米德螺旋线试样的方法对该数学模型进行了实验验证，实验结果表明：理论计算值与实验测定值之间的最大偏差小于8%；该数学模型可以定量分析和估算工艺因素对充型能力的影响，并可预测充型极限长度，这对半固态合金流变成形工艺设计和模具设计都有参考价值。

Circular twoarmed Archimedean spiral antenna s combination are designed and simulated with simulation software of high frequency electromagnetic Ansoft HFSS.

介绍微波被动比相测角的原理，利用ANSOFT高频电磁仿真软件HFSS设计圆形双臂阿基米德螺旋天线组合，天线组合的各项电性能指标均能满足微波宽带被动比相引信体制的要求，两天线进行中频比相的测试结果与理论计算结果吻合。

Two calculating methods of straight line and Archimedes spiral approximating involute are introduced.

介绍了用直线及阿基米德螺旋线逼近渐开线的两种方法。

A neat solution of the quadrature problem can be achieved with the spiral of Archimedes.

用阿基米德螺线能成功地解决化圆为方的问题，方法很简单。

This paper presents a new method——using mean radius of curvature to find the substitutive arc of Archimedes spiral,with which better precision can be obtained and the calculating formulas are very simple.

提出了一种用平均曲率半径法求阿基米德螺旋线的代用圆弧的新方法，其计算公式简单，并可得到较高的精度。

The archimedes spiral cord modulating chopper's exposure efficiency was theoretically analyzed and numerical simulated, and its impact on the following signal processing was obtained.

对阿基米德螺旋线调制斩波器的曝光效率进行了理论分析和数值模拟，得到斩波器曝光效率对后续信号处理的影响。

Considered the inside and outside contour line was Archimedes spiral in the cold rolling, the forming law of rectangular cross sectional rings has been studied. And the more precise geometrical models and calculation models have been gained. The researches can be used as a theoretical and experimental foundation for the simulation of ring rolling process. At the same time, the results of theoretical analysis have a good agreement with the results of practical rolling production.

本文在考虑冷轧过程中环件的内外轮廓线均为阿基米德螺线的情况下，对矩形截面环件的轧制成形规律进行了研究，得到了较精确的几何模型和计算模型，为环件轧制过程的模拟提供了理论依据和实验依据，同时理论分析的结果与实际轧制生产过程中的结果有较好的吻合。

Further optimal' design and performance test show that smooth transition between Archimedes spiral and cyclone chamber is realized, and therefore more stable flow field and higher separating efficiency are fulfilled.

进一步的优化设计和性能试验表明，空间阿基米德螺旋线进口流道和导流螺旋实现了平滑过渡，从而得到较稳定的流场和较高的分离效率。

This paper presents the basic construction and movement rules of the coordinator gyrorotor with reticle of Archimedes spiral reticule pattern , Also, it explains the principles and methods of dynamical balance to damp the vibration and forced nutation.

阐述了具有阿基米德螺旋线图案的位标器的基本原理及其运动规律，并说明这种陀螺转子的振动与绕动的平衡原理与方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷