谢谢亲的鼓励，爱你!
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| Gestational age | Length (US) | Weight (US) | Length (cm) | Mass (g) | | | (crown to rump) | (crown to rump) | | 8 weeks | 0.63 inch | 0.04 ounce | 1.6 cm | 1 gram | | 9 weeks | 0.90 inch | 0.07 ounce | 2.3 cm | 2 grams | | 10 weeks | 1.22 inch | 0.14 ounce | 3.1 cm | 4 grams | | 11 weeks | 1.61 inch | 0.25 ounce | 4.1 cm | 7 grams | | 12 weeks | 2.13 inches | 0.49 ounce | 5.4 cm | 14 grams | | 13 weeks | 2.91 inches | 0.81 ounce | 7.4 cm | 23 grams | | 14 weeks | 3.42 inches | 1.52 ounce | 8.7 cm | 43 grams | | 15 weeks | 3.98 inches | 2.47 ounces | 10.1 cm | 70 grams | | 16 weeks | 4.57 inches | 3.53 ounces | 11.6 cm | 100 grams | | 17 weeks | 5.12 inches | 4.94 ounces | 13 cm | 140 grams | | 18 weeks | 5.59 inches | 6.70 ounces | 14.2 cm | 190 grams | | 19 weeks | 6.02 inches | 8.47 ounces | 15.3 cm | 240 grams | | 20 weeks | 6.46 inches | 10.58 ounces | 16.4 cm | 300 grams | | | (crown to heel) | (crown to heel) | | 20 weeks | 10.08 inches | 10.58 ounces | 25.6 cm | 300 grams | | 21 weeks | 10.51 inches | 12.70 ounces | 26.7 cm | 360 grams | | 22 weeks | 10.94 inches | 15.17 ounces | 27.8 cm | 430 grams | | 23 weeks | 11.38 inches | 1.10 pound | 28.9 cm | 501 grams | | 24 weeks | 11.81 inches | 1.32 pound | 30 cm | 600 grams | | 25 weeks | 13.62 inches | 1.46 pound | 34.6 cm | 660 grams | | 26 weeks | 14.02 inches | 1.68 pound | 35.6 cm | 760 grams | | 27 weeks | 14.41 inches | 1.93 pound | 36.6 cm | 875 grams | | 28 weeks | 14.80 inches | 2.22 pounds | 37.6 cm | 1005 grams | | 29 weeks | 15.2 inches | 2.54 pounds | 38.6 cm | 1153 grams | | 30 weeks | 15.71 inches | 2.91 pounds | 39.9 cm | 1319 grams | | 31 weeks | 16.18 inches | 3.31 pounds | 41.1 cm | 1502 grams | | 32 weeks | 16.69 inches | 3.75 pounds | 42.4 cm | 1702 grams | | 33 weeks | 17.20 inches | 4.23 pounds | 43.7 cm | 1918 grams | | 34 weeks | 17.72 inches | 4.73 pounds | 45 cm | 2146 grams | | 35 weeks | 18.19 inches | 5.25 pounds | 46.2 cm | 2383 grams | | 36 weeks | 18.66 inches | 5.78 pounds | 47.4 cm | 2622 grams | | 37 weeks | 19.13 inches | 6.30 pounds | 48.6 cm | 2859 grams | | 38 weeks | 19.61 inches | 6.80 pounds | 49.8 cm | 3083 grams | | 39 weeks | 19.96 inches | 7.25 pounds | 50.7 cm | 3288 grams | | 40 weeks | 20.16 inches | 7.63 pounds | 51.2 cm | 3462 grams | | 41 weeks | 20.35 inches | 7.93 pounds | 51.7 cm | 3597 grams | | 42 weeks | 20.28 inches | 8.12 pounds | 51.5 cm | 3685 grams |
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