invariability的音标？

Invariability, anti - static, flexibility and large touch surface of long - length rubber roller.超长胶滚轮设计,具有不变形 、 防 静电 、 弹性足、接触面积大等特点.In topology , the invariability deformations of geometric figures and is referred to as...

n.恒定，不变，不变性...