这些由一系列最大直径为2毫米的小铁氧体磁心组成.These consist of a series of small ferrite cores of maximum diameter 2 mm.采用硝酸铁、硝酸锌、柠檬酸制备前驱体,在不同加热温度与速率下制备锌铁氧体.The citrate sol - gel synthesis method has been used to prepare zinc ferrite.介绍了大尺寸铁氧...
可以把你的信息或标志印在信纸上。Stationery can be imprinted with your message or logo.所有的指示标志和公告都被译成了英语和西班牙语。All the signs and announcements were rendered in English and Spanish.她在墙上贴满了十二星座的标志。She covered the walls with the signs of the...