direct GPC直接广义预测控制directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct to the post office指去邮局的路direct marketing strategy直接市场营销策略Direct-injection diesel直喷式柴油机direct-supply reservoir直接供水水库direct counting technique直接计数技术direct current telegraphy直羚报direct memory access path直接存储通路direct control connection直接控制连接direct digital synthesize直接合成技术directed distributive law定向分配律