3.
胎儿宫内生长速度[62] （每日g/kg）
| 胎龄(周) | 体重增长 |
| < 28 | 20.0 |
| 28~31 | 17.5 |
| 32~33 | 15.0 |
| 34~36 | 13.0 |
| 37~38 | 11.0 |
| 39~41 | 10.0 |
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