defencesn.防御工事名词defence的复数形式.=defenses.defencen.防御；答辩；防务Defence Operational Movement Staff国防作战运动参谋机构Defence Research Information Center防务研究信息中心Defence Information Services Branch国防情报勤务处(科)Defence Automatic Telephone Network防御自动电话网Defence Co-Operation in Armaments防务军备合作defence forces development programme防卫力量发展计划defence of logistic positioning area后勤配置地域防卫Defence Research Kingston Laboratory金斯敦国防研究实验室(加)Defence Contracts Management Command国防合同管理指挥Defence Micro-Electronics Activity国防微电子活动