Development of such distributed feedback heterostructure lasers requires crystal growth on corrugated layers.研制这种分布反馈双异质结构激光器要求在皱折层上生长出单晶层.We produce metal plates and corrugated sheets in different thicknesses.我们生产不同厚度的金...
He stopped the machine and replayed the message.他停下机器，重新播放了一遍信息。He rewound the tape and replayed a few bits and pieces.他倒好磁带, 又播放了几小段录音。Drawn matches were replayed three or four days later.没有分出胜负的比赛在三四天后重赛。Time - replaye...
古希腊是智慧和哲学的发源地.Ancient Greece was a fountain of wisdom and philosophy.古希腊人在打仗前用羊和小牛作祭品.The ancient Greeks sacrificed lambs or calves before engaging in battle.这本书使你对古希腊生活有一清楚的概念.This book gives you a good idea of life in ...