The diffusion coefficient of RaA atoms,being 0.071cm~2/s,was determinedusing two-filter wall deposition method.是什么意思_The diffusion coefficient of RaA atoms,being 0.071cm~2/s,was determinedusing two-filter wall deposition method.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句