The non - Euclidena geometries were in effect subordinated to Euclidean geometry.非 欧几里德几何实际上是从属于欧几里德几何的.He did not grant independent existence to the non - Euclidean geometries.他不承认 非 欧几里德几何的独立存在性.But none of the mathema...
But none of the mathematicians believed that these basic non - Euclidean geometries would be physically significant.但数学家们无人相信这些基本的 非 欧几里德几何必然有物理意义.Midplane Flow analysis is most accurate for thin - wall part geometries.中...
Objective : To investigate the value of acoustic immittance in the diagnosis of middle ear effusions.目的: 探讨声导抗测试对分泌性中耳炎的诊断价值.This paper presents the development of acoustic immittance apparatus and application in diagnos...
In Europe, AC is usually generated at 50 Hz.欧洲的交流电输出频率通常为50赫兹。A measure of sound intensity equivalent to one decibel at 1000 Hz.一种声强的量度单位,其值等价于1000Hz1分贝.The frame rate is then 60 Hz.这时,帧速率为60赫....