通风地槽的形式对粮仓机械通风的效率和均匀性等设计指标具有重要作用。

The pattern of aeration duct plays an important role in the efficiency and uniformity of mechanical aeration utilization for grain storage.

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这种地槽的形成与造山作用的循环可以以一种简单和自然的方式与板块构造的海洋开合理论结合起来。

The cycle of geosyncline formation and orogeny can be integrated with the plate tectonics concept of opening and closing oceans in a simple and natural way.

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红太平多金属矿床产于延边古生代地槽区二叠系海相火山岩中及其与碎屑沉积岩的过渡带上。

The hongtaiping polymetallic deposit lies in the permian marine volcanic rocks palaeozoic geosyncline and the transitional belt of the clastic sedimentrary rocks in the yanbian area.

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