It is shown that tantalum compounds are promising materials for field emitters.
实验结果表明含钽化合物是一类性能良好的场发射阴极材料。
A number of substances have been used as positive contrast agents: silver, bismuth, caesium, thorium, tin, zirconium, tantalum, tungsten and lanthanide compounds have been used as contrast agents.
许多物质已被用来作为阳性造影剂:银,铋,铯,钍,锡,锆,钽,钨和稀土化合物已被使用造影剂。
应用推荐