🌳 树木年龄示意Tree Age (demo)

使用说明与常见问题How-to & FAQ

「树木年龄示意」是什么？What is the Tree Age (demo) tool?

年龄 ≈ 胸径(英寸) × 生长因子。本地处理。可设置「胸径 英寸」、「生长因子」。Age ≈ diameter (inches) × growth factor. Processed locally. Settings: DBH inches, Growth factor.

如何使用「树木年龄示意」？How do I use the Tree Age (demo) tool?

填写树的胸径（英寸）和该树种的生长因子，即可估算树龄 ≈ 胸径 × 生长因子。结果会随输入实时更新。Enter the trunk diameter at breast height in inches and the species' growth factor to estimate the age ≈ diameter × growth factor. The result updates as you type.

因子？Factor?

查本地树种表；本页仅示意。Look up local species tables - demo only.

哪些输入会被检查？Which inputs are validated?

「树木年龄示意」会检查这些输入——「胸径 英寸」、「生长因子」：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 Tree Age (demo) checks its inputs — "DBH inches", "Growth factor": 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?

「树木年龄示意」的设置：「胸径 英寸」默认 12；「生长因子」默认 4.5。每次生成结果都按当前设置处理。Settings in the Tree Age (demo) — "DBH inches" default 12; "Growth factor" default 4.5. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「树木年龄示意」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Tree Age (demo) uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「树木年龄示意」免费吗？需要注册吗？Is the Tree Age (demo) free? Do I need an account?

「树木年龄示意」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 Tree Age (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.