...业论文范文网 关键词：生命周期现象，导入期，成长期，成熟期，衰退期，营销策略 [gap=1130]Key words: Life-cycle phenomenon, import, growth, maturity, decline, marketing strategy ...
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The significance of "life cycle" phenomenon to the classification and management of nature relics reserves was expounded.
自然遗迹的“生命周期”现象对于自然遗迹类保护区分类和管理的意义。
Male-female worm pairing of schistosome, one special biological phenomenon of the life cycle, is of vital significance to its reproductive function.
雌雄合抱作为血吸虫发育过程中的一种特殊生物学现象，对血吸虫个体的发育成熟，特别是生殖功能的完善有着非常重要的意义。
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