查询词典 Archimedes

Archimedean mathematical thought gives us the inspiration: the ingenious physical deduction is the important method of the scientific discovery; the strict mathematical deduction is the necessary step to confirm the result; the several basic principles to be selected act as foundation of deduction; devote oneself to the scientific truth and do not seek secular profit.

由Archimedes的数学思想得到的启示是：巧妙的物理论证是科学发现的重要方法；严格的数学论证是确立结论的必需步骤；要精选若干基本原理，作为论证的基础；要献身科学真理，不为俗世需求所动摇。

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。

Archimedes Screw: A spiral propeller with a fixed axle at the centre invented by ancient Greek man Archimedes.

阿基米德螺旋：它是古希腊的阿基米德发明的固定于轴心的螺旋推进器。

Correctional checking formula of melt flow ratio in injection molding was obtained by introducing a correction coefficient β which reflected the complexity degree of mold cavity. The results show that, the maximum flow ratio of 486 can be obtained when injection pressure ranges from 150 MPa to 160 MPa in Archimedes spiral mold for PP, while maximum flow ratio of 419 can be obtained when injection pressure ranges from 160 MPa to 170 MPa for PE. There is a local fluctuation phenomenon for flow ratio and corresponding injection rate in square spiral mold when injection pressure of 100, 120 and 150 MPa for PP and 130, 140 MPa for PE are reached respectively,and this phenomenon is more serious for good fluidity of melt. The average flow ratio in Archimedes spiral mold is 6% larger than that in square spiral mold for PP, and 4% for PE, the average flow ratio of PP is 19% bigger than PE in Archimedes spiral mold, and 15% in square spiral mold. The influence of the cavity profiles on the melt flow ratio is more significant for good fluidity of melt.

研究结果表明：在阿基米德螺旋线模具中，PP在注射压力为150~160 MPa时取得最大流动比485，PE在注射压力为160~170 MPa时取得最大流动比419；在方形螺旋线模具中，PP在注射压力为100，120和150 MPa，PE在注射压力为130和140 MPa时流动比及所对应的注射速率出现波动，且流动性好的熔体波动更为严重；PP在阿基米德螺旋线模具中的流动比均值较其在方形螺旋线模具中大6%，而PE大4%；在阿基米德螺旋线模具中流动比均值PP比PE的流动比均值大19%，而在方形螺旋线模具中PP的流动比均值比PE的大15%；流动性好的熔体受模具型腔轮廓特征影响大。

Starting on July 26th, researchers at the Stanford Synchrotron Radiation Laboratory in California , led by Uwe Bergmann, will attempt to read the final pages of the oldest known manuscript of Archimedes's work, the Archimedes palimpsest.

在尤。伯格曼的带领下，加利福尼亚的斯坦福同步加速器辐射实验室的研究人员将于7月26日尝试阅读目前所知的最早的阿基米德著作的手稿-《阿基米德》重写本-的最后几页内容。

Starting on July 26th, researchers at the Stanford Synchrotron Radiation Laboratory in California, led by Uwe Bergmann, will attempt to read the final pages of the oldest known manuscript of Archimedes's work, the Archimedes palimpsest.

从7月26号开始，在加州的斯坦福同步加速器辐射实验室，博格曼领导的研究团队正试图解读阿基米德已知的最早的手稿——阿基米德重写本。

This, at any rate, is roughly the criterion for inclusion in noted science writer Clifford Pickover's latest book, Archimedes to Hawking: Laws of Science and the Great Minds Behind Them.

无论如何，这大致上就是著名科学作家Clifford Pickover新著 Archimedes to Hawking： Laws of Science and the Great Minds Behind Them（从阿基米德到霍金：科学定律及其背后伟大的心灵）中列入定律的评判标准。

One story says the Archimedes made a burning mirror to set fire tory says the Archimedes made a burning mirror to set fire to the Roman ships which were attacking Syracuse.

有一个故事说阿基米德制造了一个火焰镜，点烯了进攻叙拉古的罗马战船。

Archimedes (circa 287-212 B.C.)Famous for Archimedes' screw, a water pump still used in Africa, he is said to have leaped out of his bath, yelling "Eureka!"

在非洲，阿基米德著名的螺旋杆，也就是一种水泵至今还在使用。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。