表2：He3、He4的蒸汽压 压力 温度，K 压力 温 度，K (tom) He4 He (torr) He4 He3 800 4.2700 3.2395 90 2.5781 1.7387 750 4.2009 3.1779 80 2.5163 1.6856 700 4.1287 3.1134 70 2.4489 1.6279 650 4.0529 3.0455 60 2.3745 15646 600 3.9731 2.9739 50 2.2911 14939 550 3.8886 2.8981 40 2.1952 14131 500 3.7987 2.8175 30 2.0827 13176 450 3.7026 2.7313 20 1.9427 1.1978 400 3.5990 2.6285 18 1.9092 1.1692 350 3.4863 2.5376 16 1.8729 1.1384 300 3.3622 2.4260 14 1.8333 1.1049 250 3.2231 2.3033 12 1.7893 1.0679 200 3.0637 2.1623 10 1.7396 1.0266 180 2.9924 2.0994 9 1.7120 1.0038 160 2.9153 2.0318 8 1.6820 0.9791 150 2.874H 1.9959 7 1.6490 0.9523 140 2.8315 1.9585 6 1.6123 0.9227 130 2.7865 1.912 5 1.5707 0.8894 120 2.7390 1.8779 4 1.5221 0.8512 110 2.6888 1.8343 100 2.6354 1.7881