1??????????????17?????????????,???(????“??????????????????”)???????????,??????,??2000???

?,??????,??????????????????“????”,????????,????,??????????????,??

?????????,?????????2000????,?????????????????????10000psi(???????),???????????????????????????????????690?????????,????????????????46?,??30????,????????????????????(???????? ???:??????????????)

????:?????

??

??:???????????,??????????,??????????????