Due to the main stream top support action, N, P expressed possessing space distribution character of peak value.
由于干流顶托作用，氮磷呈现具峰值的空间分布特征。
N-nitrosamines content of cigarette side-stream in different brands was examined and investigated together with the content of tar and nicotine in cigarette.
测定了各种烤烟型和混合型卷烟侧流烟气中的亚硝胺含量，并将之与卷烟焦油和烟气烟碱量相关联。
The results demonstrated that the content of N-nitrosamines in the side-stream of cigarette was not obviously related to the content of tar or nicotine.
测定了各种烤烟型和混合型卷烟侧流烟气中的亚硝胺含量，并将之与卷烟焦油和烟气烟碱量相关联。
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