> For the complete documentation index, see [llms.txt](https://manual-1-3.karamba3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual-1-3.karamba3d.com/chinese_1_3_3/3-in-depth-component-reference/3.3-cross-section/3.3.9-cross-section-range-selector.md).

# 3.3.9: 断面范围选择器 (Cross Section Range Selector)

Karamba3D随机附带的断面库包含大约22000个型材。为减少信息量，可使用**“Cross Section Range Select（断面范围选择）”**运算器，通过界定选择标准来缩短列表（请参见图3.3.9.1）。输入端口**“maxH（最大高度）”**和**“maxW（最大宽度）”**允许用户根据最大断面的高度和宽度来限制列表。单击黑色**“select（选择）”**栏时所展开的子菜单可以为缩小搜索范围提供更多选项：原产国、常规形状和系列名称等。

![图3.3.9.1：从给定列表中选择一系列断面](/files/-M9XuUr3jCvZ_niO8JIW)

如果**“CroSec（断面）”**输入端口上未提供断面列表，程序则会默认使用Karamba3D随机附带的断面列表。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://manual-1-3.karamba3d.com/chinese_1_3_3/3-in-depth-component-reference/3.3-cross-section/3.3.9-cross-section-range-selector.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.