哺乳类起源于中生代宛若原始的爬虫类.Mammals arose from a fairly primitive reptile in the Mesozoic era.丹巴地区自中生代以来经历了多期的变形 、 变质和岩浆作用.Danba area has undergone multiperiod deformation, metamorphism and magmatism since Mesozoic time.热储由中生代燕山期花...
志愿者识别出了气凝胶中令人惊异的细微结构.Volunteers have identified amazingly subtle features in the aerogel collectors.气凝胶是惯性约束聚变 ( ICF ) 实验中的一种理想的靶材料.Aerogels are perfect target materials in inertial confinement fusion ( ICF ) experiments...