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The structure is simple with the efficient usage of local resources and material.
建筑结构简单，有效使用了当地的资源和材料。
youdao
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It has the practical usage to develop new material for piston ring.
在新材质活塞环的研制过程中具有一定的实用价值。
youdao
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It has the practical usage to develop new material for piston ring.
在新材质活塞环的研制过程中具有一定的实用价值。
youdao