FFabbr.固定的费用（=Fixed Fee）FFUFeminist Free University 男女平等主义者自由大学； abbr.；=Fire Fighters Union 消防队员联盟

1. Its IR spectrum compared with that of comphor nitrimine.
   它的红外光谱与樟脑硝亚胺红外光谱相似。
2. The invisible infrared spectrum is also sensed by the multispectral scanner.
   看不见的红外光谱也能被多光谱扫描器辨出。