Overhead, the chopper roared and the big blades churned the air.头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。The air reeked of kerosene and huge aircraft rumbled overhead.空气中散发着煤油味，巨型飞机在头顶隆隆地响着。Overhead cranes were lifting giant sheets of s...
Overhead, the chopper roared and the big blades churned the air.头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。There were ominous dark clouds gathering overhead.不祥的阴霾在头顶上汇聚。She turned on the overhead light and looked around the little room.她打...
Turkey plans to harness the waters of the Tigris and Euphrates rivers for big hydro-electric power projects.土耳其计划利用底格里斯河和幼发拉底河的河水开发大型水电项目。Alligator lives in the rivers and lakes in the hot wet parts of America and China....
地球化学方法应同其它方法有机地结合起来.Geochemical methods may be linked judiciously with other techniques.为了将众多的急停回路有机地连接, 在系统中可以同时使用若干个安全监视器.For linked emergency stop circuits, several safety monitors can be installed simultaneously.本文将几...
Made from bamboo charcoal calcined in high temperature, it has unique healthy.内芯所采用的高温竹炭具有独特的保健作用.The BET specific surface area reaches 477.7 m 2 ? g - 1 for NiO calcined at 523 K.结果表明,在523K下焙烧得到的氧化镍BET比表面达到 477.7m ~2·g~...