It is to be understood that when in this Specification we speak of a dialkyl carbonate and similarly of a dialkyl phenylmalnate, that term does not imply that the two alkyl groups are necessarily the same.

• 有一点要理解：在说明中我们提到二烷基碳酸酯，相似的我们还提到了二烷基苯基丙二酸酯，这两个术语并不是暗示这两个烷基官能团必须是一样的。