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PROBLEM TO BE SOLVED: To obtain the subject excellent which displays medicinal effects for a long term and can be used in various forms and effectively display excellent residual effectiveness by using microcapsules which contain a pyrethroid-based insecticide having a specific core structure. SOLUTION...
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为提高电极材料与集流体的黏附度,增加电活性物质之间的电子导电性,电池制造过程中通常会加入一定比例的导电剂(乙炔黑)以及黏结剂(聚偏氟乙烯PVDF,丁苯橡胶SBR).现有研究已经证实上述典型有机物所具有的还原性使其具备在热处理过程中破坏正极材料稳定层状结构的潜力.但各典型有机组分及其混合物对正极材料的热还原效果...
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PURPOSE:To contrive a PCM signal to be high sound quality by sampling a sound analog signal with a sampling frequency, dividing the signal into two signals, obtaining the signals as symbol data, adding a synchronizing signal, a control signal and an error correcting code, etc., and setting ...
鸡减蛋综合症 ,又称为鸡产蛋下降综合症。其表现为患病母鸡群发生产蛋率下降、蛋壳异常、蛋体畸形及蛋质低劣。鸡减蛋综合症是一种病毒引起的疫病 ,这种病近几年才在我... 鲁延鹏,蒋立萍,朱跃恒 - 《农业科技与信息》 被引量: 15发表: 2000年