社会必要产品: socially necessary product次要产品: auxiliary products重要产品: shortage of commodities主要产品: main products; major product; prime products; principal products; staple item; staple product主要产品有: k5 kmmx cpu次要产品;副产品: secondary product主要产品, 基本产品: staple product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主要产品工程师: chief product engineer主要产品和副产品生产: main and by-product production主要产品别月份收益表: monthly income statement by major commodity groups主要产品定单, 主要生产定单: principal production order副产品 次要产品 二步产物 二次产品: secondaryproduct制盐工业主要产品取样方法: the sampling methods of the main products in the salt industry必要: requisite; necessary; certainly need; essential; indispensable 必要的措施 necessary measure; 必要的损失赔偿 necessary damages; 必要且充分的条件 necessary and sufficient condition; 必要和有益的补充 necessary and useful supplement; 国家为这个农场提供了必要的资金。 the state provided the requisite capital for this farm. 进一步讨论是必要的。 a further discussion (on the matter) is necessary.; 必要产品 necessary product; 必要带宽 [无线电] necessary bandwidth; 必要劳动 necessary labor; 必要前提 prerequisite; precondition; 必要设备 necessaries; 必要生活资料 necessary means of livelihood; daily necessities; 必要条件 essential condition; prerequisite; 必要性 necessity; requirement单位产品必要的劳动消耗量: unit manpower needs首要产出: primary outcomes主要产层: principal producing formation主要产煤省: leading coal producing province主要产区: major production areas主要产物: primary product; staple主要产业: major industry; staple industry玉米主要产区: corn belt必要成份: essential component必要补充: necessary supplement