控制品 meaning in Chinese

dashpot

Hence we combined coprecipitation method , using zinc carbonate as enclosure dose causing the crystal nucleus can not grow up , zinc titanate acts as phase - transition accelerant , thereby we can obtain rutile nanometer tio2 powder at lower calcining temperature and in briefer calcining time relatively
因此我们结合共沉淀法，引入碳酸锌作包覆剂控制品粒长大，利用钛酸锌作品型促进剂，在相对较低的焙烧温度和较短的保温时间内制得到了金红石型纳米tio _ 2粉体。