upper epidermis meaning in English
上表层
上表皮
Examples
- Condyloma accuminatum has prominent koilocytosis in the upper epidermis that is not found in verruciform xanthoma
尖锐湿疣在上表皮可见明显的挖空细胞，无泡沫细胞的聚集。 - There are 2 - 3 layers of long - column - shaped palisade tissue under the upper epidermis , and there are a great number of mechanical tissues which made up of vascular bundle sheath
上表皮下方有2 - 3层长柱形的栅栏组织，在主脉大侧脉外方具有由大量机械组织组成的束帽或束鞘。 - For amorpha fruticosa linn . , there exists epidermal hair on the upper epidermis , some macro ventilating pit in the spongy tissue , many crystal cells in the phloem of the leaf and around vascular bundles
紫穗槐叶的上表皮有表皮毛，海绵组织局部有大型通气孔，在叶的主脉韧皮部处和叶柄维管束内外都含有许多含晶细胞。 - Both upper and lower epidermis cells are polygonal or irregular in shape in all species studied . the patterns of anticlinal walls are straight , arched or sinuous , and the raphal cuticular striastriae are occasionally observed on periclinal walls . stomatal apparatus and secretory cells are found on the upper epidermis of several species and on the lower epidermis of all species
结果表明：这些植物叶片的上、下表皮细胞呈多边形或不规则形，垂周壁式样为平直、弓形或波浪状，平周壁偶有脊状条纹；少数种类上表皮还有气孔器或分泌细胞，所有种类下表皮具气孔器和分泌细胞；气孔器类型以平列型和侧列型居多，偶尔有无规则型；气孔极区呈稍角质加厚或棒状加厚，稀t形加厚。 - The results showed that the differences of leaf thickness , cutin layer thickness , stockade tissue thickness , sponge tissue thickness , ratio of stockade tissue thickness to sponge tissue thickness , tightness of leaf tissue structure , sedimentation of leaf tissue structure and stoma density were significant , while the differences of the sizes of upper epidermis and lower epidermis were not
叶片厚度、角质层厚度、栅栏组织厚度、栅栏组织与海绵组织厚度的比值、叶片结构紧密度和气孔密度等值越大的含笑，受旱危害愈轻，其抗旱性就越强。