“drop-in” 可以在句中指代什么? 本帖最后由 百越小妹 于 2010-7-21 16:28 编辑 since considerable effort had already been expended in the optimization of the reaction conditions and because we sought to explore a continuous “drop-in” alternative for the current batch process, the study was constrained to conditions similar to those used commercially, which involve contacting hydrogen and about 3wt % of 5% pd/c with a 5% solution of substrate in a mixture of isopropanol / water until the reaction is complete. 1、这个句子中 “drop-in”， 加了个引号，不知道想表达什么，有上下文，我猜，可能跟连续反应设备有关。 2、 about 3wt % of 5% pd/c  ， 这个，我觉得自己被绕晕了，不懂。   质量分数约 3% 的 5 % pd/c 钯碳 催化剂，不理解什么意思。 3、 involve “……” and“ ……with…… ”，是这样么？ 4、这个 which 是修饰 “study” 还是？   查看更多
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