Bismuth provides a very attractive model system for studying low-dimensional physical phenomena owing to the light effective masses, long mean free path and high carrier mobility.是什么意思_Bismuth provides a very attractive model system for studying low-dimensional physical phenomena owing to the light effective masses, long mean free path and high carrier mobility.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句