无齿

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。

By using the non-instantaneous section envelope machining principle , a mathematical model of mold grinding helical-spur cylinder gear is established,which is a calculating method to shape axile sectional of grinding wheel for numerical control mold grinding helical-spur cylinder gear.

利用无瞬心包络法成形加工的原理，建立了成形磨削斜齿圆柱齿轮的一种数学模型，为斜齿圆柱齿轮数控成形磨削的砂轮轴向修形提供了一种计算方法。

In the paper,the transmission of designed roller oscillating tooth reduction gear adopts osci llating tooth gear drive without exception,one-stage reduction gear and two-stage reduction gear have joined through spline coupling band;The joining way of shock wave thellomble and oscillating tooth adopts the biserial bearing of without inner ring of needle bearing,and directly adopts bearing outer ring as shock wave thellomble;Center wheel of two-stage reduction gear and center wheel of two-stage reduction gear passes through taper thread,and center wheel is fixed;As soon as the flange of input end and center wheel of one-stage reduction gear,the flange of export end and center wheel of two-stage reduction gear makes monobloc structure.

本文预设的井下减速器的传动均采用活齿传动，一级减速器的输出轴和二级减速器的输入轴通过花键联轴套联接；激波环与活齿的毗连方式采用能蒙受较大载荷的无内圈双列滚针不锈钢管，且直接采用不锈钢管外圈作为激波环；一级减速器的中心轮和二级减速器的中心轮是通过锥螺纹毗连的，且中心轮固定；一级减速器的中心轮与输入端的法兰盘，二级减速器的中心轮与输出端的法兰盘均做成整体的结构。

In the paper,the transmission of designed roller oscillating tooth reduction gear adopts oscillating tooth gear drive without exception,one-stage reduction gear and two-stage reduction gear have joined through spline coupling band;The joining way of shock wave thimble and oscillating tooth adopts the biserial bearing of without inner ring of needle bearing,and directly adopts bearing outer ring as shock wave thimble;Center wheel of two-stage reduction gear and center wheel of two-stage reduction gear passes through taper thread,and center wheel is fixed;As soon as the flange of input end and center wheel of one-stage reduction gear,the flange of export end and center wheel of two-stage reduction gear makes monobloc structure.

本文设计的井下减速器的传动均采用活齿传动，一级减速器的输出轴和二级减速器的输入轴通过花键联轴套联接；激波环与活齿的连接方式采用能承受较大载荷的无内圈双列滚针中国财经圈，中国财经圈，且直接采用进口中国财经圈外圈作为激波环；一级减速器的中心轮和二级减速器的中心轮是通过锥螺纹连接的，且中心轮固定；一级减速器的中心轮与输入端的法兰盘，二级减速器的中心轮与输出端的法兰盘均做成整体的结构。

Stipules absent. Leaves alternate, simple, odd-pinnate, or digitately trifoliolate; blades of simple leaves entire at margin, those of compound leaves crenulate, crenate, lobulate, or rarely entire at margin.

托叶无。叶互生，单，奇数羽状复叶，或者掌状具三小叶；单叶的叶片边缘全缘，复叶的边缘具细圆齿、圆齿，或具小裂片，或者很少边缘全缘。

Leaves simple, alternate or opposite, petiolate; leaf blade laminar, venation pinnate, secondary veins reticulate, margins entire, crenate, serrate, or dentate; stipules small and caducous, or estipulate.

单叶，互生或者对生，具叶柄；叶片有羽状脉，次级脉网状，边缘全缘、具圆齿、有锯齿或者具齿；托叶小和早落，或者无托叶。

In China, Pimpinella can be divided into two groups: those species with hairy, puberulent, or distinctly roughened fruits and obsolete calyx teeth; and those with smooth, glabrous fruits and obsolete or conspicuous calyx teeth.

在中国，Pimpinella 可以被分成两组：有毛，被微柔毛的，或果明显粗糙和萼齿废退的；以及那些具平滑，无毛果和废退的或明显的萼齿的。

Lower lip of calyx 2-toothed less than 1/3 its length; posterior-lateral lobes of corolla limb subcircular; plants subglabrous

花萼2齿少于1/3其长度的下唇；花冠瓣片近环形的后唇瓣侧面裂片；植株近无毛 17 Teucrium bidentatum 二齿香科科

Basal petioles 1.5–5 cm, sheaths long, broad; blade oblong, 2–4 × 1–2 cm, pinnate; pinnae sessile,(3–) 4–6 pairs, remote; ultimate segments long-ovate to suborbicular, 5–10 × 3–8 mm, base subtruncate or rounded, entire or apex shallowly 1–3-toothed, sometimes 3–4-crenate; terminal pinnae obovate or orbicular, base cuneate, apex more deeply 3-lobed.

基部的叶柄1.5-5厘米，鞘长，宽；叶片长圆形， 2-4 * 1-2 厘米，羽状；羽片无柄，(3-)4-6 对，遥远；末回裂片长卵形到近圆形， 5-10 * 3-8 毫米，基部近截形或圆形，有时，浅全缘或先端1-3齿状具圆齿；更深的顶生的羽片倒卵形的或圆形，基部楔形，先端3浅裂。

During the study period, we found that plants were present only in natural creek banks, but not altered ones. Comparisons between natural banks without plants and altered banks revealed no significant difference in both shrimp abundance and distribution. However, there was significant difference in shrimp abundance when natural banks with plants and altered banks were compared, suggesting that construction might have negative effects on plants and, in turm, on shrimp abudance. Comparisons between reproductive and non-reproductive season yielded significant results in both shrimp abundance and distribution, which resulted from the recruitment of juveniles to local populations.

在实验期间，自然河段有水蕴草而整治河段没有水蕴草的存在，比较无水蕴草的自然河段与整治河段，发现无论是数量或出现率都没有显著差异，然而，在有水蕴草存在的自然河段之多齿新米虾数量与出现率则较整治河段高，显示哈盆溪可能因为整治工程影响了底质的型态，导致水蕴草不易生长，进而影响多齿新米虾的数量及出现率；在季节方面，结果显示，不同季节在数量和出现率上都有显著差异，而此差异是因为幼虾在生殖季大量加入族群所致。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。