由硅藻土残留物的通常用来作为过滤材料的轻质土。

A light soil consisting of siliceous diatom remains and often used as a filtering material.

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提出了用气相色谱直接测定水、土、粮食水果和蔬菜中10种有机氮农药多残留的分析方法。

A gas chromatographic method without derivatization was established for residue analysis of 10 organonitrogen pesticides in soil, water, cereals, fruit and vegetable.

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本文报导了一个气相色谱法分离和测定米、土、水、饮料和蔬菜中12种有机磷农药残留。

This paper reported Gas Chromatographic procedure for. separating, and determining 12 organophosphorus pesticide residues in Water, soil, rice, beverage and vegetables.

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