activate key起动键activatev.激活；使活动；起动activated sludge oxidation活性污泥氧化作用activated carbon adsorbing活性炭吸附activated carbon-ammonia活性炭-氨activated bleaching earths活性白土activated carbon selecting活性炭筛选activated sludge digestion活性污泥消化activated manganate method活性锰酸盐法Activated carbon perfusion活性碳灌注activated polycondensation活化缩聚activated sludge reduction活性污泥减量

1. All proteases use water to cut their respective proteins, and enzymes in the aspartyl protease family employ a pair of aspartic acids to activate a water molecule for this purpose.
   所有的蛋白酶都会利用水来切割其作用的蛋白质，而天冬胺酸蛋白酶家族的成员，则还会利用两个天冬胺酸分子来活化水分子，以利蛋白质的切割。