宇航员取回了一块月岩样本.Astronauts brought back a piece of the moon.1993年, 一块苏联的月岩标本在苏富比拍出了$442, 500的高价.S . government property . At Sotheby's in 1993, a Soviet sample fetched $ 442, 500....
Paper: Preparation of AAM - CHT from AAM and Chitsoan.论文: 丙烯酰胺改性壳聚糖的制备,化学世界,2001年第2期.Line the base and sides of a 20cm deep round cake tin with paper.把一个20厘米深的圆形糕饼盒的底部和四周都垫上纸。His paper was published in the proceedings of...
She chanted hymns and prayers with the voice of a cantor.她用圣诗领唱者的嗓音吟唱赞美诗和祈祷词.So it's just like Georg Cantor said, the recursion continues forever.这和康托说的循环不断出现一样.So it is great news for Cantor , according to Lutnick,...
究竟什么可称作进攻性武器仍然难以界定。Exactly what can be called an offensive weapon is still a grey area.在开拓时期,这种进攻性是生存的必要条件.In our pioneering days this aggressiveness was essential to survival.我要承认进攻性的人总是有点性感.I will admit there's so...
Its common useis in conjunction with selective gas chemisorption for verification of metal surface area.它通常是和选择性气体化学吸附结合起来使用,以确定金属表面积.A direct dissociative chemisorption process was found.并且发现一直接分解化学吸附过程.The chemisorptio...