Poisson,s ratio

Poisson,s ratio 英语翻译Poisson's Ratio Values.-More than a single stress-strain coefficient is required to fully represent the mechanical behavior of any material under a general system of changing stresses.For isotropic materials,with no coupling between shear ANSYS 一个模型单元警告问题element type 1 is solid 185.it is associated with linear materials only and poisson’s ratio is not greater than 0.49.keyopt=3 is suggested.这个是什么意思?改怎么解决? ANSYS 单元模型的一个警告问题element type 1 is solid 185.it is associated with linear materials only and poisson’s ratio is not greater than 0.49.keyopt=3 is suggested.我出了什么问题了?该怎么弄? 英语翻译This study shows that it is not possible to characterize the behavior of the sand accurately by a single value of Poisson's ratio.Moreover,because the sand dilates under the action of shear stresses,the most appropriate stress-strain rela economy's debt-to- GDP ratio what's the difference between ratio and proportion? 求组一个概率论的问题求证X是一个二次分布,X（n,p),求证当S=np,X收敛于一个poisson（泊松）分布. reserve ratio Extrema Ratio in terms of Student’s ‘t’-test and variance ratio ‘f ’-test翻译是什么意思? 英语翻译If the Debt ratio is less than 0.5,most of the company's assets are financed through equity.If the Debt ratio is greater than 0.5,most of the company's assets are financed through debt.A Company with a high debt ratio (highly leveraged) c cup clock Ratio specific heat ratio是什么意思 RATIO中文是什么意思 aspect ratio是什么 ? magnitude ratio是什么意思 equivalent ratio是什么意思