docs: explain what it n, close: ant-design#6934

sunjianqing · Jul 24, 2017 · f648eda · f648eda
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Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/components/grid/demo/gutter.md b/components/grid/demo/gutter.md
@@ -7,11 +7,11 @@ title:
 
 ## zh-CN
 
-栅格常常需要和间隔进行配合，你可以使用 `Row` 的 `gutter` 属性，我们推荐使用 `(16+8n)px` 作为栅格间隔。
+栅格常常需要和间隔进行配合，你可以使用 `Row` 的 `gutter` 属性，我们推荐使用 `(16+8n)px` 作为栅格间隔。(n 是自然数)
 
 ## en-US
 
-You can use the `gutter` property of `Row` as grid spacing, we recommend set it to `(16 + 8n) px`.
+You can use the `gutter` property of `Row` as grid spacing, we recommend set it to `(16 + 8n) px`. (`n` stands for natural number.)
 
 ````jsx
 import { Row, Col } from 'antd';