在 http://www.mit.edu/afs/athena/course/10/10.491-md/www/
CourseNotes/Polymer_CN_Glossary.html#p:
上有定义分别为：
polymer:
a substance composed of macromolecules. (IUPAC)
macromolecule:
a molecule of high relative molecular mass, the structure of which essentially
comprises the multiple repetition of a number of constitutional units. (IUPAC)
俺被告糊涂了，请各位大虾指点指点，谢谢。
