主要: main; chief; principal; majo ...省: examine oneself critically主要产层: principal producing formation主要产品: main products; major product; prime products; principal products; staple item; staple product主要产品有: k5 kmmx cpu主要产区: major production areas主要产物: primary product; staple主要产业: major industry; staple industry煤省: coal province玉米主要产区: corn belt各国主要产品产量: output of principal products in selected countries制造商，主要产品有: cyrix：cpu主要产品, 基本产品: staple product主要产品工程师: chief product engineer主要产物，大宗出产: staple主要产品定单, 主要生产定单: principal production order主要产品别月份收益表: monthly income statement by major commodity groups主要产品和副产品生产: main and by-product production制盐工业主要产品取样方法: the sampling methods of the main products in the salt industry产煤的: producing coal产煤区: coal province产煤的岩层: carboniferous rocks副产煤气: by product gas; by-product gas煤田，产煤区。: coal field生产煤巷: active entry
