???

?г???????????????в??????й????ù???????

????У??????????λ?????г????????

г????????????????????????????????

?

?3???29.1?958??18.6%?????34.8???360???????4·??2?10855??14.7%

й?оо??2017??й??��?????飬еMPA??г???г??仯???????з???????

?????г??Щ????г??????淶淶???????1?????????г?????гλ??????е??MPA??????Уд???Σ?б??з??????δги??

??

?й????????????еж?飬?????顣÷?й?й???????е????

?б?д??漰?????????????У?б??е?????档?????????г?Υ?жй?У?е???

й????ùУ????????????????????????Щ??????????????

?о?κ????39??з???????й??????????????????й???δ??????????????????

й?о?о?????????й?????????????????????Э飬???????棬?????ж???????????????й??????

????

?г?????????У?????????3????????4.93??????15.4%2013????20.6???

??????????????涨??Υ????????????

?б???????ABS?????????100%20%????н???д????????Υ档?ù?????????????????????Ук??????????????Υ?

??й???????50%????г????ABS????й?У??????????

??????У??ж????ABS??ABS?

?????湻????????????????λ????( ??)

? й??