A kind of viscoelastic spectral stochastic finite element method(VSSFEM) was developed and stochastic analysis of solid rocket motor grains was presented.是什么意思_A kind of viscoelastic spectral stochastic finite element method(VSSFEM) was developed and stochastic analysis of solid rocket motor grains was presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句