??????????????2000????????
??
??????????????1?????17??? (??? ?)???????(???????????????????????????????????“???????????”)??????17?????????,????????,?????????????????????2000????????
1???17??????,????????2000?????????(??????????)
?????????,???????,??????????????“??????????????”,????,??,???????????????????????????????,??????
????????,??????2000??,????????????????????????10000psi(?????),??690?,???????46?,???30????????,???????????????????????????????????????????????
?????,?????,????????,??????????????????????????????????????????????????????????????,????????????????????????????,????????????????,????,??????,???????????????
??,????????????????????????????????????????????????????????????????????,??2000???????????????
????,????,???,?????????????????????????,?????????????????????????????????????????10?,?????????(????????????????????)
??????????:???????????
???????????????????2000?????????????????????
????
- 1?????????????????????
- 2??????0.7%???0.8%
- 3?????????????????????
- 4???????????????????????
- 5????????????????12?19?
- 6??:?????????25????1???
- 7?????????12????????
- 8“???”?“???”,?????????????
- 9??3?????!??????????
- 10???????????????????
- 11??:?????????25????1???
- 12????????????????“??”
- 13??????????????3??????
- 14???????????????????
- 15?????????????????7???
- 16????????????????????
- 17??????????????12???
- 18??????????????????
- 19??????????????????
- 20?????????????????????