two use两用twonum.二；两个two-circuit method双电路法two-pass assembler两次扫描汇编程序,两次扫描的汇编程序,二次扫描汇编程序two-track recorder双声迹录音机two-bath developer双浴显影剂,双液显影two stage combustion两段燃烧Two sides of straits海峡两岸two-pole conflicts两极冲突two-light headlamp双光前大灯two party subscriber两户同线电话用户two-port parameter四端网络参量,四端参量