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"相关结果 10条To pare the detection of carious lesions involving orthodontic appliances (O) with the fluorescent method (I) and visual clinical examination (R) in patients treated with fixed orthodontics (P).
www.ncbi.nlm.nih.gov在研究面向制造设计的特征造型系统特点的基础上,以回转类零件为对象,开发了一个基于特征的三维实体造型系统。用一种实用的特征分类与表达方法和特征造型过程中一种新的信息建模方法,解决了面向制造设计所涉及的各阶段数据共享问题。该系统的开放性结构使之能方便移植和扩展。
www.semanticscholar.orgAspera is a NASA's Astrophysics Pioneers mission, led by the University of Arizona (UofA), designed to study the presence of hot gases (
www.ncbi.nlm.nih.gov