因为稀有并且品相完好，它价值连城。It was a real prize due to its rarity and good condition.收藏家们会花5万到100万美元去购入一份稀有标本。Collectors will pay $50,000 to $1 million for a rare specimen.它们的价格几乎完全取决于它们的稀有程度。Their price depended almost entirely on...
Method Perform tooth implantation and restoration on sufferers with partial anodontia in molar area.方法采用埋置式种植术对部分磨牙区缺失患者行牙种植修复.Objective To seartch for the best restorative procedure in the majority anodontia of posterio...
We may thereby compute the number of graphs which are isomorphic to their complements.因此我们可以计算同构于其补的图的数目.This paper introduces two types of benzenoid isomers with six isomorphic moieties.本文引入了两类具有六个同构块的苯系异构物.Corporate Ac...