毛的长度 meaning in English

fur length

The length may vary somewhat
毛的长度可以稍微有些改变。
Most of these species had simple hairs . the stomatal apparatus is paracytic type with one or two subsidiary on both or either side of the guard cells . three types of anticlinal walls of epidermal cells are recognized : straight , sinuolate or sinuate
表皮细胞垂周壁式样、气孔分布密度及式样、下表皮毛被的有无、多少及毛的长度、下表皮角质突起饰物的形态等具有一定的分类学意义。