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因此，可考虑将这些对鱼低毒的菊酯类农药作为防治水稻二化螟的高毒农药的替代药剂和抗性治理的轮换品种。
Therefore, these low fish-toxicity pyrethroids can be considered as candidates for replacing highly toxic organophosphates and resistance management for the rice striped stem borer.
药用气雾剂抛射剂CFC（氟里昂）的替代转换已成为国际药剂学研究的热点之一，我国尚未起步。
The pharmaceutical aerosol propellant CFC substitution has become a hot topic in international pharmaceutical field, but it has not been started in China.
利用HACH公司的45600型COD反应器，用自制药剂替代HACH的专用药剂，能满足日常废水监测分析的COD快速测定。
The daily quick determination of COD in wastewater can be achieved using HACH 45600 COD detector with self-made reagents instead of the special reagents of HACH.
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