A reactive agent contained in the reactive layer ACTS to provide a limited lifetime to the data contained in the second layer (23).
在反应层中包含的反应试剂用于为第二层(23)中包含的数据提供有限的寿命。
An over-reactive immune system is also the cause of allergies, where a harmless agent (such as pollen) can lead to an unnecessary immune response.
过激的免疫系统也是引起过敏的原因，本来无害的物质(如花粉)会引起不必要的免疫反应。
PH value of sliding agent in mercerized wool and nylon acid dyes, reactive dyes, mordant dyes or metal complex dyes for dyeing, dye bath can aptitude acidic PH value from sliding.
PH值滑动剂应用于丝光羊毛和锦纶的酸性染料、活性染料、媒介染料或金属络合染料的染色，可使染浴的PH值从中性向酸性滑移。
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