The dichroic agent is polymetric iodine formed by impregnating an intially transparent plastic sheet of polyvinyl alcohol with iodine and heating.是什么意思_The dichroic agent is polymetric iodine formed by impregnating an intially transparent plastic sheet of polyvinyl alcohol with iodine and heating.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句