Through IR analysis, the main component in group II was identified as dialkyl-benzene, while in Group III was monoalkyl-benzene as well as dialkyl-tetralin and indane (DTI).
然后用紫外法求得了第Ⅱ族组、苯之和与对苯的质量比约为1∶409。
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I recently presented the prizes in the e-commerce awards which are supported by the DTI through our UK Online for Business Project.
我最近通过英商业线服务项目领取了由英工部支持的电子商务奖励。
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