在凝结核计数器中被计下的粒子，在天然云或雾的凝结中往往很不活化。

Particles which are counted in condensation nucleus counters are very often not activated in natural cloud or fog condensation.

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方法 对90例正常口腔粘膜颊部、舌背、舌腹 个部位进行了脱落细胞微核计数的分析 ，并判定微核计数的影响因素。

Methods The smears of oral exfoliative cells were made from buccal mucosa, the dorsum and ventrum of the tongue from 90 normal individuals.

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方法 对90例正常口腔粘膜颊部、舌背、舌腹 个部位进行了脱落细胞微核计数的分析 ，并判定微核计数的影响因素。

Methods The smears of oral exfoliative cells were made from buccal mucosa, the dorsum and ventrum of the tongue from 90 normal individuals.

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