??1?????29??,??????20?????
??????????,?????19??2??????????,??????????????3???????????,18?,2???,1?????
??????,?????2????????,??????????????
?????????????????,?????,2??????,?????????16???1???????
????????????,????,??????
???????????(????????? ????????????)
?????:????????????
?????????:??????????
???:????????????
???????????2.5???23.4?
???Williams??????????????
??:????????????
??????12??????????????
???«?????»?5???“???”
2017???????:????????????6.…
?????????????:???????
???:????????????????
3?13??????????????
??????:?????????????
??????:?????????????
??«?????»:???????????
???:???????????????
????????????5?????65?
??:?????????3000??????
3??????PMI????0.5?????????…
?????????????????????
?????????????????????“???”
??????12??????????????
???????????????“??”??
?????????????????(?)
?????????????????:????
?????????????????????