stamped是什么意思? they will signify their approval and participation by signing their name and dating their signature on the approval template (exhibit a) stamped on the cover sheet of the procedure. 如果按“盖章”理解，那就是“封面上盖有批准模版的章印”，这个“批准模版”就要以章的形式印出来，可是前半句话的意思是在批准模版上签署胜名和日期，也就是说要在章上签字，你们难道不觉得这样理解别扭吗？stamp确实有盖章的意思，但放在这里确实不是这个意思。具体你可以到我上面的附件中查看样版。查看更多
三苯基磷系列物的性质如何? what do you mean (p＋进攻羟基), please do not use phases such as (elctrophile attacts nucleophile). indeed, the formation of very strong phosphine oxide double bond is the driving force of the reaction. in most cases, once pph3 and oxygen involved in a reaction o=pph3 would normally be formed as the product. 查看更多
第1天
关注盖德视界
添加小助手
