A kind of modified low toxic urea - formaldehyde resin was synthesized.

经过大量试验合成了一种低毒改性脲醛树脂.

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These agricultural pesticides are considered low toxic.

这批农药被认定是低毒的.

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Due to its eco - friendly, economic and low - toxic advantages, water - based polyurethane is gradually replacing conventional solvent - based polyurethane.

水性 聚氨酯因环保 、 经济和低毒害, 正逐渐取代传统的溶剂型聚氨酯.

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Synthetic process of a high - efficient and low - toxic insecticide and of its intermediate product , p - methylthiophenol, is described.

介绍了高效低毒杀虫剂─—丙虫磷及其中间体─ — 对甲硫基苯酚的合成方法.

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