A series of novel purpurin-18 imide derivatives which had long wavelength absorption, were synthesized by modification of methyl pheophorbide-a.是什么意思_A series of novel purpurin-18 imide derivatives which had long wavelength absorption, were synthesized by modification of methyl pheophorbide-a.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句