The design of commercial construction environment mark has dual functions in economy and humanity in the days of commercialization.
商业建筑环境标识设计在商业化的今天具有着经济性与人文性双重作用。
The fault has dual functions in migration and accumulation of oil and gas, the one is to destruct hydrocarbon reservoir, another is to seal oil and gas.
断层在油气运移及成藏中起双重作用，如何评价断层，对油气勘探开发有重要作用。
The invention is characterized by the combination of the blades of a propeller and the wheel rim or ring rib of a flywheel, and has dual functions of a flywheel and a rotor wing or a propeller;
本发明是一种旋轮翼，它具有缘肋和桨叶，其特征是：把旋翼或螺旋桨的桨叶和飞轮的轮缘及加强环肋结构有机地结合成为一个整体，使之具有飞轮与旋翼或螺旋桨的双重功能；
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