direct STI直接浅沟道隔离directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct heating dryer直接加热乾燥器directivity function定向性函数direct-line filter直接线路滤波器Direct metal forming直接金属成形direct arc-melting直接电弧熔炼direct opthalmoscope直接检眼镜direct air-cooling直接空冷direct current winch直流绞车direct-bond apical直接粘接基板direct current drive直莲动