grainedadj.有纹理的；有颗粒的；粗糙的动词grain的过去式和过去分词.grainn.谷物；谷类；微量；颗粒；纹理；格令v.形成(颗粒)；(用谷物)喂养Grain for green policy退耕还林grain growth inhibitor晶粒生长抑制剂Grain-handlers' lung上帝赐予我们健康。grain-size parameter粒度参数grain boundary barrier晶界势垒Grain wholesale market粮食批发市场grain logistics center粮食物流中心grain-deficient area缺粮区grain yield per capita生存压力grain boundary sliding晶界滑移