direct taxn.直接税(如所得税)directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct product decomposition直积分解direct radiant exchange area辐射直接交换面积direct current excited laser直沥励型激光器directing the yellow project引黄工程Direct Fire Simulation Laser直接射击模拟激光器direct-current restoration直流恢复direct departmental expenses分部直接费用direct melt polycondensation直接熔融缩聚direct air-cooling systems直接空冷direct-viewing memory tube直观存储管