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击倒中时(KT_(50))或致死中时(LT_(50))的大小是用来评价消毒杀虫剂质量好坏的重要依据。KT_(50)或LT_(50)的计算一般采用表格法,虽然该法一目了然,但是整个计算过程繁琐,稍不注意就容易出错,并且费力费时。为了减轻人们的计算劳动,作者根据目前较普遍使用的CASIO fx——3600p或180p计算器设计了一套计算过程,经实际使用,
The knockdown (KT_ (50)) or lethal (LT_ (50)) size is used to evaluate the quality of disinfection insecticides important basis. The calculation of KT_ (50) or LT_ (50) generally adopts tabular method. Although the method is clear at a glance, the whole calculation process is cumbersome, and it is easy to make mistakes and takes time and effort. In order to reduce people’s computational labor, the author designs a set of calculation process according to the CASIO fx - 3600p or 180p calculator that is commonly used at present, and after actual use,