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。
It is shown that tantalum compounds are promising materials for field emitters.
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。
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.
讨论钽、铌化合物的光谱干扰和非光谱干扰，分析产生干扰的原因，并阐述消除干扰的方。
The reason of producing interference has been discussed and the method of removing interference has been presented.
VB族元素钒、铌、钽的单茂金属化合物作为烯烃催化剂可得到分子量分布相当窄（1.05）的聚烯烃；
The half-metallocene of the elements V, Nb and Ta in VB group could be used in the polymerization of olefin to prepare polymer with rather narrow molecular weight distribution (1.05).
VB族元素钒、铌、钽的单茂金属化合物作为烯烃催化剂可得到分子量分布相当窄（1.05）的聚烯烃；
The half-metallocene of the elements V, Nb and Ta in VB group could be used in the polymerization of olefin to prepare polymer with rather narrow molecular weight distribution (1.05).
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