Hospital Transfer Order转院证 High Temperature Operating高温工作（试验） High Temperature Oxidation高温氧化(作用) High Tibial Osteotomy高位胫骨切骨术 Horizontal Take-Off水平起飞 Tritiated Water氚化水 Hellenic Telecommunications Organisation SA (Greece)希腊电信组织山(希腊) Hard to Operate (vehicle repair)很难操作(汽车修理) Hydrogen Tritium Oxygen氢的同位素氧 Highway Transportation Officer公路交通官员 High-Tech Offensive (Bayern; software)高科技的进攻(软件),拜仁 Happy to Oblige乐意效劳 Hostile Take Over敌意的接管 Hostile TakeOver敌意接管 High-Temperature Oxidation高温氧化