贸易单证样式
Layout key for trade document
多边贸易体制
multilateral trading system
全球多边贸易体系
global system of multilateral trade
双边贸易结构
characteristics of the bilateral trade structure
双边贸易协定
bilateral trade agreement
Van der Pol-Duffing单边约束系统
Van der Pol-Duffing one-sided constraint system
板材四面折边单元
sheet metal four edge folding cell
半单边带传输系统
quasi-single sideband transmission system
参数单边检验
parameter single side inspection
残留单边带
VSSB Vestigial Single SideBand
残留单边带滤波器
residual sigle-side band filter