abaxial surface中文什么意思

背轴面

• abaxial:    adj. 【植物；植物学】背轴的，远 ...
• surface:    n. 1.表面；地面；水面；广场，空 ...
• abaxial surface of the leaf:    叶侧表面

例句与用法

1. Description : evergreen trees , up to 25 m high ; twigs , buds , petioles , abaxial surfaces of leaves and peduncles covered with yellowish brown rigid hairs
   形态特徵：常绿乔木，高达25米；小枝、芽、叶柄、叶背和花梗均被黄棕色糙伏毛。
2. Flower - heads narrowly campanulate , 16 - 19 mm long , ca . 6 mm across , usually 2 - 4 in terminal clusters ; peduncle 2 - 8 mm ; involucral bracts ca . in 7 series , ribbed on abaxial surface , apex spiny
   叶互生，卵形，长3 - 5 . 5厘米，宽2 - 4厘米，先端短尖，基部近截形，边缘具疏齿，两面被长柔毛，具基出脉3条；叶柄长3 - 5毫米。
3. Leaves thick leathery , obovate - lanceolate , obovate or oblong - lanceolate , 4 - 12 cm long and 2 - 3 . 5 cm wide , apex rounded , sometimes emarginated , base cuneate , abaxial surface thinly covered with a grayish to fawn indumentum at first , later glabrescent ; petiole 1 - 1 . 5 cm long , glabrescent
   叶厚革质，倒卵状披针形、倒卵形或长圆状披针形，长4 - 12厘米，宽2 - 3 . 5厘米，顶端近圆形，有时微缺，基部楔形，下面初时薄被灰白色或淡土黄色丛卷毛，后近无毛；叶柄长1 - 1 . 5厘米，后近无毛。