头围
头围是在孩子头部最大部分进行的测量。这种测量通常为 0-3 岁的孩子进行。
测量时应当使用不可拉伸的卷尺。卷尺通常是可弯曲的金属量尺。测量时，卷尺尽可能紧贴着头部最宽围度缠绕。通常，此部位在前额眉毛上方 1-2 指宽到后脑勺最突出的部分。测量三次，取精确到 0.1 厘米的最大测量值。[……]
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