欧美日韩视频在线观看高清免费网站_国产欧美日韩精品在线一区_日韩精品视频美在线精品视频_久久精品国产欧美一区二区_国产啪精品视频网站免费尤物_亚洲欧美日韩另类国产第一_大香蕉久久国产精品_国产精品久久波多野结衣

??????? ???????

??. ??? ???
I ????? ????? ??????? ????? ?????? ??????? 1 ??? ?????
2 ????? ??????? ??????
3 ???? ?????? ????? ??????
II ?????? ?????????? ??? ??????? 1 ????
2 ?????? ?????? ? PVC
III ?????? ?????????? ??????? 1 ????? ?????? ??????? ???????? ????? ??????? ???????
??? ???????
?????????
???????
Aniline ? MDI ? ?????? ??????
2 ????????? ????????? ?????????
?????? ??????? ???? ????????
3 ?????????? ????????? ?????? ???????? (PP)
????? ?????????? (PO) ? polyols polyels
4 ????? ????????
5 ?????????
6 PTA
7 ??????? ??? ??? ??? ?????
8 ???? ?????????
IV ???? ??????? ???????? 1 ????????? ??????? ???? ???? (PA)
?????? ??????? (PC)
polybutylene terephthalate (PBT)
(????????????/???????/???????) ???????? (ABS)
2 ????? ???????
3 ?????? ??????
4 ??????????
V ???? ????? 1 polysilicon
VI ????? ????? ????? 1 ????? ??? ??????
2 ????? ??? ????????
3 ????? ??? ????????? ??????
4 ????? ??? ????? ???????
5 ????? ??? ????????? (????? ????? ??????)