全球多边贸易体系
global system of multilateral trade
多边多议题协商
Multi-lateral multi-issue negotiation
multi-literal multi-issue negotiation
轮齿-本体多体系统
teeth-wheel multibody system
球面等边多边形拼接
spherical equilateral polygon joint
柔体多体动力学
flexible multi-body dynamics
双边贸易结构
characteristics of the bilateral trade structure