duallyadj.二重的adv.二重地dualadj.双重的；成双的n.双数dual projection对偶投影Dual-drainage双重排水dual-core DSP双核DSPdual redundancy二重余度dual impression双重印象dual psychology二重心理学dual valve type双阀型dual - curing双固化dual chartering双轨执照dual TEM source双馈源