unsubstituted

基本解釋

These amine substituted acid may polymenze in an analogous manner to unsubstituted oxo-anions.
這些胺取代酸可以與未取代的氧絡(luò)陰離子相類似方式聚合。
The results show that the main constituent of each sample is unsubstituted agarose.
凝固溫度與甲氧基的取代位置及含量有關(guān);
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熱性及耐溶劑、抗化學(xué)腐蝕性。
Freight forwarding market is an important part of international shipping market. It plays a unsubstituted role in international transportation field.
貨運(yùn)代理市場(chǎng)是國(guó)際航運(yùn)市場(chǎng)的重要組成部分，在國(guó)際運(yùn)輸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.
高性能混凝土產(chǎn)生于20世紀(jì)90年代,經(jīng)過(guò)十幾年的發(fā)展歷程,它以其高工作性及高耐久性等特點(diǎn)逐漸成為建筑領(lǐng)域近乎不可替代的產(chǎn)品。