齿片

Flowers white; leaf margin subentire to inconspicuously and remotely crenate-serrulate or serrulate toward apex; sepals not persistent on fruit.

花白色 对不明显和稀疏具圆齿有细锯齿的或有细锯齿向先端近全缘的叶缘；在果上不宿存的萼片。

Leaflets sharply serrate with setaceous teeth; bracteoles longer than flowers; fruit densely hispid.

小叶锐的有锯齿具刚毛状的齿；小苞片长于花；果密被糙硬毛。

The velocity of sound in water is more than four times that in air .

舵片上有一个带齿的轮，这个轮受到气流的冲击而高速转动。

Filaments usually connate at base and adnate to perianth segments, entire or toothed.

通常的花丝在基部合生和贴生于花被片，全缘的或齿。

Sepals eroded-denticulate to subentire, usually apiculate, broadly elliptic to broadly ovate; leaf apex usually apiculate-obtuse to rounded

萼片腐蚀具小齿到近全缘，通常，宽椭圆形到宽卵形；叶先端通常具细尖钝到圆形 28

Petals white tinged with purple, blue, or purple-red; anther connective apically appendaged; leaf blade margin subentire to deeply crenate; sepals persistent

花瓣白色微染具紫色，蓝色，红色的或紫色；顶部的花药药隔是附属物；叶片边缘近全缘到具深圆齿；萼片宿存 5 N。

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。

Methods Atlantoodontoid interval of 120 adult crania was measured in the lateral image of X ray film.

测量120例(维吾尔族48例，汉族72例)成人头颅X线侧位片寰齿间距。

Leaf blade drying herbaceous; bract margin entire to denticulate or serrate.

叶片干燥草质；苞片边缘全缘到具细齿或有锯齿。

The tissues of leaf of Cycas taiwaniana,Bowenia serrulata and Dioon eduleand tissue of root of Macrozamia longispina of cycads,and leaves of Michelia alba and Amygdalus persicaof angiosperm were observed by scanning electron microscope.

对苏铁属的台湾苏铁、波温铁属的细齿波温铁、双子铁属的双子铁叶的羽片，大泽米铁属长刺大泽米铁的根，以及被子植物的白兰和桃的叶组织进行了电子扫描显微镜的观察研究，结果表明，2个科4个属苏铁植物的导管类型是丰富的，导管的结构组成方式、发育过程与被子植物是一致的；例如导管端壁倾斜度等结构特征显示，一些被子植物导管的结构比苏铁类植物的要原始。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐