direct jet直射式directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct digital disply oximeter直接数字显示式血氧计direct isotope dilution method直接同位素稀释法, 同位素正稀释法, 同位素直接稀释法Direct seeding in early spring早春直播direct reading reflector meter直读式反射仪direct-coupled driver triode直接耦合激励三极管direct melt copolycondensation直接熔融聚合direct internet-based report网络直报direct-contact desuperheater喷水减温器direct mehing polycondensation直接熔融法direct fluorescence microscopy直接荧光显微术