unsubstituted

基本解释

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 results show that the main constituent of each sample is unsubstituted agarose.
凝固温度与甲氧基的取代位置及含量有关;
The copolymers have good heat-resistance and excellent chemical-resistance similar to those of unsubstituted PEKK.
此新型含氯取代基聚芳醚酮酮具有和聚芳醚酮酮相似的耐热性及耐溶剂、抗化学腐蚀性。
Freight forwarding market is an important part of international shipping market. It plays a unsubstituted role in international transportation field.
货运代理市场是国际航运市场的重要组成部分，在国际运输中具有不可替代的重要作用。
High performance concrete came into being in 90 ages of 20 century.It has been unsubstituted in construction field for its high working and high wear by nearly twenty development.
高性能混凝土产生于20世纪90年代,经过十几年的发展历程,它以其高工作性及高耐久性等特点逐渐成为建筑领域近乎不可替代的产品。