天美影院

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?????? ???????: ???????? ??? ????? ????? ?????? ?????? (S1? S2? S3)? ???? ?????? V1 ???? ???? ?????? ????? ??? ??????? ??????? ?? S1? ??????? ?? S2? ???? ?????? V2 ???? ???? ?????? ????? ?? ????? ???????? ??????? ?? S3? ???? ?????? V3 ?????? ??? ???? ??? ?????? ?? ????? ??????? ??? ?????? ??? ??????.

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1. ?????? ???? ??? ????? ??????? ??????? ?????? ?? P = K × Q / S
   • P: ??? ?????? ????? MPa
   • K: ????? ??? ?????? ????? ??????? ?????? ??????????? ????????
   • ?: ??????? ???????? ?????? ????? ?????? ????? g/s
   • S: ??????? ??????? ?????? ?????????? ??????.
2. ????? ????? ??? ????? K. ?. ????? ??????: ????? ?????? ???????? ?????? ???? ????? ??????? ???????? ????? ??? K ?????? ???? ?????. ?? ???????? ??? ?????? ???? K ???????? ????? ??? ????? ??????. ?. ????? ????? ????????: ????? ???? K ????? ??????? ?????? ?????? ????? ????????. ????? ?? ???????? ??? ?????? ???? K ???????? ????? ????? ?????? ????? ???????? ????? ?????.

???? ??? ????? (Pi) ???? ?????? (??? ??????)

?????? ??? ????? Pi (???/??2): Pi = P * A / Ao

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P: ??? ??????

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Ao: ????? ?????? ?????? ???????

A = π * D^2 / 4? D: ?????? π: ??? = 3.14159

???? 1: ??? ?????? ???????? ???? ??? ??????

??? ?????? = 75 ???/??2? ??????? ??????? ???????? ????? = 150 ??2? ????? ?????? ?????? ????? = 15.9 ??2 (????? 45 ??).

???????? 2πR2 = 3.1415 * (45 ?? / 2)^2 = 1589.5 ??2 Pi = 75 * 150 / 15.9 = 707 ???/??2

???? 2: ??? ????? ???????? ???? ??? ???????

??? ????? ??????? = 900 ???/??2? ??????? ??????? ???????? ????? = 150 ??2? ????? ?????? ?????? ????? = 15.9 ??2 (????? 45)

??? ?????? P = Pi * Ao / A = 900 * 15.9 / 150 = 95.4 ???/??2

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