📏 皮褶体脂示意Skinfold Body Fat (demo)
简易：体脂% ≈ (Σ三处皮褶)×0.1 + 性别常数（示意，非 Jackson-Pollock）。本地处理。可设置「性别」、「皮褶1 mm」、「皮褶2 mm」、「皮褶3 mm」。Demo: BF% ≈ (sum of 3 skinfolds)×0.1 + sex constant (not Jackson-Pollock). Processed locally. Settings: Sex, Fold 1 mm, Fold 2 mm, Fold 3 mm.
使用说明与常见问题How-to & FAQ
「皮褶体脂示意」是什么？What is the Skinfold Body Fat (demo) tool?
简易：体脂% ≈ (Σ三处皮褶)×0.1 + 性别常数（示意，非 Jackson-Pollock）。本地处理。可设置「性别」、「皮褶1 mm」、「皮褶2 mm」、「皮褶3 mm」。Demo: BF% ≈ (sum of 3 skinfolds)×0.1 + sex constant (not Jackson-Pollock). Processed locally. Settings: Sex, Fold 1 mm, Fold 2 mm, Fold 3 mm.
如何使用「皮褶体脂示意」？How do I use the Skinfold Body Fat (demo) tool?
选择性别并填写三处皮褶厚度（毫米），即可得到体脂率的粗略估算（简化公式，不是 Jackson–Pollock 公式）。结果会随输入实时更新。Choose your sex and enter the three skinfold measurements in mm to get a rough body-fat estimate (a simplified formula, not Jackson–Pollock). The result updates as you type.
专业公式？Pro?
请用体成分仪或专业皮褶公式。Use a body-comp device or a validated equation.
哪些输入会被检查？Which inputs are validated?
「皮褶体脂示意」会检查这些输入——「皮褶1 mm」、「皮褶2 mm」、「皮褶3 mm」：必须填写，须大于 0；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Skinfold Body Fat (demo) checks its inputs — "Fold 1 mm", "Fold 2 mm", "Fold 3 mm": required, must be greater than 0; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「皮褶体脂示意」的设置：「性别」可选 男、女（默认 男）；「皮褶1 mm」默认 12；「皮褶2 mm」默认 15；「皮褶3 mm」默认 18。每次生成结果都按当前设置处理。Settings in the Skinfold Body Fat (demo) — "Sex": Male, Female (default Male); "Fold 1 mm" default 12; "Fold 2 mm" default 15; "Fold 3 mm" default 18. The result always uses the current settings.
结果可以代替医生的建议吗？Can this replace medical advice?
不能。「皮褶体脂示意」基于常用公式给出估算，个体差异较大，如有健康问题请咨询医生或专业人士。No. The Skinfold Body Fat (demo) gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「皮褶体脂示意」免费吗？需要注册吗？Is the Skinfold Body Fat (demo) free? Do I need an account?
「皮褶体脂示意」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Skinfold Body Fat (demo) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.