3) PGA is very difficult to fabricate, since it is insoluble in most commonly used organic solvents, such as chloroform, acetone, and methylene dichloride.是什么意思_3) PGA is very difficult to fabricate, since it is insoluble in most commonly used organic solvents, such as chloroform, acetone, and methylene dichloride.在线翻译_英语_读音_用法_例句