oval window meaning in Chinese

卵形窗
卵圆窗
前庭窗

Residual choleateatoma was found more frequently in the anterior epitympanum , the oval window niche , and the hypotympanum near the tubal orifice
容易残存的部位，依序为上鼓室前方、卵圆窗及下鼓室近耳咽管处。
It is found at staged operation that residual cholesteatoma is more frequently encountered at some anatomic sites such as the anterior epitympanum , oval window niche , and hypotympanum near the eustachian tube
由阶段手术得到的经验显示上鼓室之前侧、卵圆窗及下鼓室靠近耳咽管处是胆脂瘤容易残留的部位。