8314×29815in3167a 卫，_=2×72.75×10-3N.mx18×103 2×10-”×1×10 P ÷h3167P%=5.283x10 P=5350Pa9 3 3 1 3 r 2 10 1 10 2 72.75 10 18 10 3167Pa P 8.314 2998.15ln ´ ´ ´ ´ ´ × ´ ´ ´ = - - - N m 6 5.283 10 3167 \ln = ´ Pa Pr Pr=5350Pa