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The differentiation states of costae indicates the ways they absorb and transport water, and their ability adapting to the dry conditions, which was elucidated by the following examples: Brachythecium plumosum, because of its thin cell-walls in the costae and the absence of hydrome, assistant and steroid cells, can absorb water and nutrition under shady and moist conditions; Plagiomnium rostratum, though often grows in shady and wet condition, has hydrome and steroid cells, a feature similar to those of xeric mosses, which endows it to grow in the conditions with periodical drought stress during its life cycle; Hygrohypnum luridum is characterized by its slender leaves with only one layer of cells, the thin cell-walls, the absence of filaments on the leaf surface, and the fewer layer cells in the costae, the absence of hydrome and steroid cells. These features make it adaptable to aquatic environments. For Pogonatum inflexum and Atrichum undulatum, their ventral surfaces covered with lamella, while for Racomitrium japonicum, Thuidium cymbifolium, Macromitrium ferriei, Diphyscium fulvifolium, Barbula unguiculata and Ceratodon purpureus, their leaves are strongly mammillose or papillos. Such appendiculate structures made them adaptable to thy conditions.
例如，荫湿生环境下的羽枝青藓Brachythecium plumosum，其中肋细胞胞壁较薄，无导水主细胞和副细胞的分化，也没有厚壁细胞分化，能够在阴湿环境下吸收水分和养分；钝叶匍灯藓Plagiomnium rostratum具有与旱生藓类植物相似的中肋结构，叶片较厚，中肋具导水主细胞，中肋背面具厚壁细胞，这些特点使该种藓类植物能够分布于间隙性干旱胁迫的环境中；水灰藓Hygrohypnum luridum叶片纤细柔弱，仅1层细胞，细胞胞壁薄，叶表无附属结构，中肋细胞层数少，无导水主细胞分化，也没有厚壁细胞，这些特点使得水灰藓'能够生长在水生环境中；东亚小金发藓Pogonatum inflerum和波叶仙鹤藓Atrichum undulatum的叶腹面覆盖着栉片，东亚砂藓Racomitrium japonicum、大羽藓Thuidium cymbifolium、福氏蓑藓Macromitrium ferriei、东亚短颈藓Diphyscium fuhifolium、扭口藓Barbula unguiculata和角齿藓Ceratodon purpureus的叶片表面有乳头状突起或疣状物，这些附属结构使它们能够适应于旱生的环境中。
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Inner filaments with 1 irregularly denticulate tooth on each side at base; ovary with concave nectaries at base covered by hoodlike projections.
内轮花丝具1具不规则小齿齿在每边在基部；子房具凹陷蜜穴在基部被钩状突起覆盖。
- 更多网络解释与小齿状突起相关的网络解释 [注：此内容来源于网络，仅供参考]
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Dens：齿突
指状突起,称为齿突(dens)与寰椎前弓后面的齿突凹相关节. 齿突原为寰椎的椎体,在发育过程中脱离寰椎而与枢椎椎体融合. 枢椎的椎体较其它颈椎要小. 齿突两侧各有圆形的关节面,称为上关节面,与寰椎的下关节面相关节. 椎弓根短而粗,
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denticulation：小齿状突起, 小齿
private line service [信]专用线业务 | denticulation 小齿状突起, 小齿 | transient intermediate 瞬时中间产物, 不稳定中间产品
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denticulation：小齿状突起
denticulate 有小齿状突的 | denticulation 小齿状突起 | denticule 齿状装饰
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denticule：齿状装饰
denticulation 小齿状突起 | denticule 齿状装饰 | dentiform 齿形的
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odontophore：舌突起
齿舌是软体动物特有的器官 位口腔底部的舌突起(odontophore)表面 由横列的角质齿组成 似挫刀状. 摄食时以齿舌作前后伸缩运动刮取食物. 齿舌上小齿的形状和数目 在不同种类间各异 为鉴定种类的重要特征之一. 小齿组成横排 许多排小齿构成齿舌.
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denticulate：有小齿状突的
denticular 小齿状的 | denticulate 有小齿状突的 | denticulation 小齿状突起
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dentiform：齿形的/齿状的
denticulation /小齿状突起/小齿/ | dentiform /齿形的/齿状的/ | dentifrice /牙粉/牙膏/
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Hexanchidae：六鳃鲨科
六鳃鲨科(Hexanchidae)眼小,椭圆形,鼻孔近吻端. 口在头的腹面,上、下颌齿异形: 上颌牙尖而细长,主齿头向后弯曲,中部的齿有大的突起,两旁有一--二小突起,下颌牙宽扁,长方形,具几个小齿头,呈梳状. 尾鳍延长,尾椎轴稍上翘,卵胎生.