未取代 meaning in English

unsubstitute

These amine substituted acid may polymenze in an analogous manner to unsubstituted oxo-anions .
这些胺取代酸可以与未取代的氧络阴离子相类似方式聚合。
The opto / electronic properties and solid - state structures of fluoro - substituted conjugated organic systems exhibit unique characteristics in comparison with their counterparts
氟取代的有机半导体材料在光电性能和固体结构上表现出与未取代的同类材料不同的特征。