Helicopter Association International世界直升机协会 Handbook of Artificial Intelligence手册的人工智能 Hotel Association of India饭店协会的印度 High Altitude Indoctrination高海拔的理由 Hellenic Aerospace Industry希腊航空航天工业 Hospital Acquired Infection医院内获得性感染 Human Awareness Institute人类意识的学院 Health Action International国际健康动态 Human Appeal International人类呼吁国际 Hepatic Activity Index肝活动指标 Hemagglutination Inhibition (Immune assay type, microbiology)免疫测定型凝集抑制实验(),微生物 High-Current Arc Ignition支大电流引弧 Healthcare-Acquired InfectionHealthcare-Acquired感染 High-Level Analog Input高级模拟输入 Higher Authority of Intelligence更高的权威的情报