固定资产投资的英文：
investment in fixed assets
fixed-asset investment

参考例句：

First, fixed asset investment.
一是固定资产投资。

Investment by Various Sectors
各行业固定资产投资

investment是什么意思：
n. 投资（额）；投入；可投资的东西

invest material
覆盖材料

profits and losses on disposal of investments
转让投资的损益

He bought it purely as an investment.
他纯粹是作为投资而购买的。

fixed是什么意思：
adj. 固定的，不变的；（表情）呆滞的

Have you fixed on the date?
日期选定了吗?

The horse race was a fix.
这场赛马有人操纵。

Can you get a fix on the submarine?
你能给潜水艇定位吗?

assets是什么意思：
n. [asset] 的复数形式；资产，财产；有利条件

There are also different options as to the assets: total assets, assets employed, direct assets, and controllable assets.
对资产的测量也有不同的选择:总资产、可选用资产、直接隶属资产和可控制资产。

There are two main types of assets: current assets and noncurrent assets.
资产有两种主要类型：流动资产与非流动资产。

The company's asset is valuable .
这家公司的资产是可估价的。