productive: adj.1.生产的，生产性的；有生产力的；多产的。2.产生[出产]…的 (of)。短语和例子productive labour 生产劳动。 productive forces 生产力。 an age productive of great men 伟人辈出的时代。 productive of great annoyance 会产生巨大麻烦的。 productive soil
Their productive cycle covers several decades . 它们的生产周期可延续几十年。
2.
The performance of the sows is affected in different stages of the productive cycle . the average results from ovulation to number of piglets at the 25 kg are given in table 1 母猪的生产性能受繁殖周期各个不同阶段的影响。表1列出了从排卵到仔猪体重25公斤的平均影响。
