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abaxial surface中文是什么意思

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用"abaxial surface"造句"abaxial surface"怎么读"abaxial surface" in a sentence

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  • 背轴面

例句与用法

  • 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。
  • 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。
  • 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。
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