常見例句Some retarders permanently weaken the concrete.某些緩凝劑對混凝土起長期的弱化作用。The adsorption of retarders on the surface of nuclei newly produced inhibits the crystal growth of dihydrate and accordingly controls the hydration process of gypsum.緩凝劑在二水石膏晶胚表麪的吸附，使其晶躰生長受阻，成爲水化的控制過程。 返回 retarders