PBN was finally selected to trap the gas-phase free radicals and the formed adduct was detected with ESR in the determination of gas-phase free radicals in cigarette smoke.
研究结果表明：以PBN为自旋捕捉剂捕集气相自由基用ESR检测的方法和以剑桥滤片捕集固相自由基用ESR检测的方法来分别检测气相自由基和固相自由基的方法是可行的。
The necessity of introducing exhaust particulate trap in domestic automotive diesels was discussed on the basis of the present exhaust smoke situation.
根据国产车用柴油机的排气烟度现状，论证了采用排气微粒过滤器的必要性。
The necessity of introducing exhaust particulate trap in domestic automotive diesels was discussed on the basis of the present exhaust smoke situation.
根据国产车用柴油机的排气烟度现状，论证了采用排气微粒过滤器的必要性。
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