副卫细胞 meaning in English

accessory cell
subsidiary cell

The number , arrangement and character of subsidiary cells is often of value in taxonomy
副卫细胞的数目、排列方式、和特征可作为分类学的依据。
Subsidiary cell ( accessory cell ) one of a number of specialized epidermal cells of a plant that are found adjacent to the guard cells , and may help in opening and closing the stomata
副卫细胞：是特化了的植物表皮细胞的一种，紧邻保卫细胞，在植物气孔的开闭过程中起一定作用。