retarders的用法和樣例：
例句
- Some retarders permanently weaken the concrete.
某些緩凝劑對混凝土起長(cháng)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面的吸附，使其晶體生長(cháng)受阻，成為水化的控制過(guò)程。
