abbr. 热成像系统（Imaging Thermal System）；[美]技术情报服务处（Technical Information Service）
📘 English Definition（英文释义）
n a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite
n shrub with terminal tufts of elongated leaves used locally for thatching and clothing; thick sweet roots are used as food; tropical southeastern Asia, Australia and Hawaii
n the syllable naming the seventh (subtonic) note of any musical scale in solmization