When there exists BP, ultraviolet radiation irradiate on the PET surface introduced- COOH, then graft RGD on it.是什么意思_When there exists BP, ultraviolet radiation irradiate on the PET surface introduced- COOH, then graft RGD on it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句