6级间歇性双震
intermittent-type double shocks with M≥6
半线性双调和方程
semilinear biharmonic equations
半线性双曲方程
semi-linear hyperbolic equations
半线性双曲系统
Semi-linear hyperbolic system
弹塑性双线性本构关系
bilinear elastic-plastic constitutive relation
elastic-plastic bilinear constitutive relation
电子提花双罗纹针织机
electronic jacquard interlock knitting machine
东青青花双耳瓶
celladon blue vase with double ears
多属性双边谈判
bilateral multi-attribute negotiations