combination die组合式凹模,组合式模,多腔模,组合模combinationn.结合；结合到一起的事物或人；密码combination- tannage结合鞣combination tool block组合刀架combinational chemical复配化学剂combination investment组合投资combination techniques复合技术combination experiment组合试验combinational identity组合恒等式combination scattering组合散射combination prediction组合预测combinational mutation组合变异