parts per part 怎么翻译? the amount of dmf solvent employed may be from about 6 parts per part of cellulose to about 20 parts per part of cellulose 每份纤维素用6份dmf溶剂...... (记得讨论过类似问题,果然,请看 https:///viewthread.php?tid=292126&highlight =) ------------------------------------------fyi查看更多