Human Research Facility人类的研究机构 Human Rights Foundation人权的基础 Historic Resources Fund (Virginia)历史资源基金(维吉尼亚州) Human Relief Foundation人类的救济基础 Hussmann Refrigerator CompanyHussmann冰箱的公司 Humanitarian Response Funds人道主义的回应的基金 Hairpin-Resonator FilterHairpin-Resonator过滤器 High Reliability Fighter高可靠性的斗士 Home Radio Frequency Standard (HRFWG)家里的无线电频率标准(HRFWG) Human Rights First (formerly known as the Lawyers Committee for Human Rights)人权第一(原名为人权委员会的律师) Heavyduty Roll FeedHeavyduty辊的饲料 High Readiness Force高度戒备力量 Height Range Finder高度的测距 Hazard Rate Function (reliability)风险率函数(可靠性) Human Resource Function人力资源职能