United States federal tax agency
- Collects taxes and enforces tax laws
- Part of the Department of the Treasury
美国联邦税务机构
Inertial reference system in aerospace
- Interface requirements specification document
- Instant replay system in sports broadcasting
惯性参考系统(航空航天)
Initialism in business fields such as industrial or investor relations
- Computing uses like information retrieval or intermediate representation
- Science and other uses like infrared or international relations
- Also incident report, immediate release, or interstate route
在商业领域的缩写:劳动关系或投资者关系
- 在计算机领域:信息检索或中间表示
- 在科学等领域:红外或国际关系
- 也可指事件报告、立即发行、州际公路
Plural form of IR
- Used when referring to multiple IR items
IR 的复数形式