Lead mineralization not only possesses industrial significance but is the guide element to find tin orebodise.
铅矿化不仅具有工业意义，而且可作为寻找锡矿体的指示元素。
The flow element is designed as a component separate from the air guide element and is connected to it by an adjusting mechanism.
本发明的特征在于，流动件与导流件分开地构成并与该导流件通过调整运动装置连接。
A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.
摘要在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。
A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.
在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。
As a guide element of urban expansion and the urban structure framework, road traffic has a complicated relation with spatial form evolution of old cities.
作为城市拓展导向要素以及城市结构骨架的道路交通，与旧城空间形态演变之间存在复杂的关系。
As a guide element of urban expansion and the urban structure framework, road traffic has a complicated relation with spatial form evolution of old cities.
作为城市拓展导向要素以及城市结构骨架的道路交通，与旧城空间形态演变之间存在复杂的关系。
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