大家在查： Dawoud UP-1 pubescens stands dosemeter 乔丹罗汉 settings set 11.08 麒麟区 polymenze Cyanopyrazine

unsubstituted

网络未被取代的；取代

unsubstituted

unsubstituted

unsubstituted

未被取代的

取代

...俗成的命名（Trade names ）例：由未取代(unsubstituted)，无支化的由未取代， (non

2

Nansha , situated at the center of Pearl River Delta , has unsubstituted advantage in the economic development of such district .

南沙地处珠江三角洲的中心，在珠三角经济发展中具有不可替代的区位优势。

3

R is selected from the group consisting of hydrogen , substituted or unsubstituted alkyl , and substituted or unsubstituted aryl ;

R 是选自氢，取代或未取代的烷基，取代或未取代的芳基；

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