他们发现没有系统的证据来说明只要对光照施以改变，工厂的生产力水品就有所提高，这与该实验的论文相矛盾。
Contrary to the descriptions in the literature, they found no systematic evidence that levels of productivity in the factory rose whenever changes in lighting were implemented.
生产力与生产关系、经济基础与上层建筑的矛盾，构成社会的基本矛盾。
The contradictions between productive forces and the relations of production and between economic base and superstructure constitute the basic social contradiction.
同时，在生产力和生产关系矛盾运动的作用下，这些阶段性特征呈现出不断被强化的趋势。
In the meantime, under the influence of contradictive movement of the productive forces and production relations, the characteristics of these stages have constantly showed an intensified trend.
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