例句與用法

更多例句：  下一頁(yè)
1. Most meteorites that have been examined fall into two classes .
   大多數(shù)檢驗(yàn)過(guò)的隕石被分成兩類(lèi)。
2. For example, much information comes from the study of meteorites .
   例如，對(duì)隕星的研究可以取得大量的資料。
3. Meteorites have also been analysed, and a few of them appear to be not less than 7, 000 million years old .
   有人分析過(guò)隕石，其中只有少數(shù)隕石的年齡似乎在70億年以上。
4. These calculations can be compared with the chemical analyses of meteorites in an attempt to ascertain the conditions in the nebula at the time of their formations .
   這些計(jì)算可與隕星的化學(xué)分析相比較，從而推斷在它們形成時(shí)星云中的條件。
5. The spherical particles are swept as droplets or volatilized and recondensed from a meteorite as it is heated to incandescence by friction in the upper atmosphere .
   球形粒子是由小滴吹刮或者由在高層大氣中被摩擦加熱到白熾化的隕石揮發(fā)并重新凝結(jié)而成。