??
1????17??????????????,?????????????????????(?????????????“???????????????????????????????????”)??????,??????????????????,??2000?????????????????
??,????,?????????“??????”,???????????????,????,???????????,?????
????????,????2000?????????,????????10000psi(????),?690??????????????????,??46?,???30???????,?????????????(? ???:???????????)
??????????????:?????????
?????????
?????????????2000???????????????????????????