Spectroscopy accounts for half of all instrument sales and is the largest overall category of instruments, as the Alpert & Suftcliffe study shows.是什么意思_Spectroscopy accounts for half of all instrument sales and is the largest overall category of instruments, as the Alpert & Suftcliffe study shows.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句