The methods of determining high active end group content and molecular weight of polyisobutene have been established by nuclear magnetic resonance and near infrared spectra respectively.

分别建立核磁测定聚异丁烯活性端基含量以及其他烯键含量和近红外光谱快速测定聚异丁烯活性端基含量、其他烯键含量和相对分子质量的分析方法。

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This was my kind of environment — an active, vibrant kind of place — completely at the opposite end of the spectrum from the office environment where I found myself.

这里的工作环境、气氛正是我所要的——这里积极、活力四射，这里和办公室的工作环境、工作范围完全不一样，在这里，我真正找到了自己想要的东西。

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What you end up promoting is a very general message to be active.

活跃起来做点什么可以是个很笼统的信息。

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McCarthy remained active until the end of his life.

VOA: special.2009.08.30

Mr Dickins expressed concerns that some currently active theatres could end up abandoned and empty, while previously closed buildings are prime targets for demolition and redevelopment.

BBC: Arts funding cuts 'to threaten more theatres'

The total size of the armed forces would shrink from 2.1 million to 1.6 million active-duty end strength and from 1.6 million to around 900, 000 reserves.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2

It is gratifying that, as the Philips set reaches those masters active toward the end of this century, some lessons of the past do seem to have been learned.

ECONOMIST: The keys of the kingdom | The