infra是什么意思

实用例句

1. An infra-red eye is said to detect the movement of any animal within an angle of 110 degrees at up to 10 metres.

据说红外眼能够探测到110度角范围内远至10米的任何动物的活动。来自柯林斯例句

2. The infra - red spectra of quinones present a number of interesting features.

醌类的红外光谱具有一些有趣的性质.来自辞典例句

3. Dancing in the street is rather infra dig for a bank manager!

一个银行经理在街上跳舞,那是颇失身分的!来自辞典例句

4. Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.

乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.来自辞典例句

5. Infra - red absorption takes place only when there is a change of dipole moment.

红外吸收峰仅在有偶极矩变化时才能实现.来自辞典例句