Tú / biǎo / xiǎn / shì / qū / xiàn / zài / zhù / diǎn / fù / jìn / de / biàn / huà / sù / dù / hěn / màn图表显示,曲线在驻点附近的变化速度很慢。The graph shows that the curve changes very slowly near the stationary point.