尖齿的

Meshing properties and application of major conical surface double envelope Hourglass worm gearing;2. In this paper, the regularities of undercutting and topping of major conical surface envelope hourglass worm is researched.

分析了大锥面包络环面蜗杆的齿顶变尖和根切规律，并通过和平面包络环面蜗杆的比较，得出其在根切和齿顶变尖这两个方面具有比平面包络蜗杆更优良的性能，因而是一种在实际中可替代平面包络、具有广泛应用前景的新型包络蜗杆传动。

Spikelets with 1 floret (very rarely 2), rachilla disarticulating above glumes, with penicillate extension lying against the palea; glumes subequal, usually slightly longer than the floret, rarely slightly shorter, membranous, 1–3-veined, apex acute or acuminate; floret callus bearded, hairs usually 1/3 as long up to about equaling floret; lemma thinly to firmly membranous,(3–)5-veined, dorsally awned or awnless, apex erose, denticulate or 2–4-toothed; awn geniculate or straight, its position varying from near base to near apex, usually inconspicuous, up to twice length of lemma but occasionally reduced to a subapical mucro or absent; palea 2/3 as long to subequaling lemma.

小穗具1小花(极少2)，高于颖片，具具毛撮的扩展对内稃躺脱节的小穗轴；通常，近等长的颖片稍长于那些小花，很少稍短，膜质，脉，先端锐尖或渐尖；作为长的可达的通常的公然反对的小花结茧，头发1/3大约等于小花；稀疏外稃到坚定膜，(3-)5－脉，背具芒或者啮蚀状的顶，或者2-4齿状的具小齿，awnless；芒膝曲或者直，作为近相等外稃的长时期的内稃2/3。

Panicle spikelike, dense, linear to ovate or oblong in outline, lower part sometimes interrupted, 1.5–11 cm; branches short, appressed, pubescent to tomentose. Spikelets 4–9 mm, florets 2(or 3); rachilla hairs 1–1.5 mm; glumes subequal or slightly unequal, lower glume 4–8 mm, upper glume 5–9 mm, apex acuminate, occasionally briefly aristulate; lemmas lanceolate, 4–7 mm, scaberulous to pubescent, awned from upper 1/4–1/3, apex usually 2-denticulate, teeth often mucronate, occasionally subentire; awn 2–7 mm, weakly geniculate with loosely twisted column, or recurved at base, or almost straight; palea keels scaberulous.

小穗4-9毫米，小花2；小穗轴头发1-1.5毫米；颖片近等长或稍不等长，下部颖片4-8毫米，上面颖片5-9毫米，先端渐尖，偶有短暂具小芒；披针形的外稃，4-7毫米，对短柔毛来说微糙，从上面1/4-1/3，先端通常2具小齿，短尖，偶有近全缘的齿通常具芒；芒2-7毫米，用松弛缠绕的柱子，或下弯在基部身体虚弱膝曲，或者几乎直；内稃龙骨微糙。

The technical characteristics of the invention is that: the rotor end face tooth profile contains four, five or six sections of tooth curves with the circular nature; when it has five sections, addendum circular arcs and dedendum circles are added to the addendum or the dedendum of the rotor; when it has six sections, both the addendum circular arcs and the dedendum circles are added to the addendum and the dedendum of the rotor at the same time, to form four different combination schemes; there are common tangents at the connection points of the two adjacent teeth forming curves, which has a smooth tooth-profile without cusp, a high-wearing feature, a long life of the rotor, a small leakage triangle, and a good sealing property.

本发明的技术特征是：转子端面齿型是包含四段、五段或六段圆弧性质的齿曲线；当为五段时，在转子的齿顶或齿根加上齿顶圆弧或齿根圆弧，当为六段时，在转子的齿顶和齿根同时加上齿顶圆弧和齿根圆弧，形成四种不同的齿型组合方案；相邻的两组成齿曲线的连接点处具有公切线，齿型光滑，没有尖点，耐磨性好，转子的使用寿命长，泄漏三角形小，密封性好。

A case report was presented with a female patient of class II malocclusion, bimaxillary dentoalveolar protrusion with space deficiency. Bilateral lower left second molars were mesially inclined impactions with large caries. The lower left second molar was diagnosed with acute apical periodontitis.

本文提出一双颚齿槽前突合并齿列拥挤之安格氏二级咬合不正之女性患者，其下颚两侧第二大臼齿为近心倾倒之阻生齿合并龋齿，而左下第二大臼齿之龋齿已侵犯到牙髓而有急性根尖牙周炎的情况。

Spikelets laterally compressed, lanceolate-oblong, florets several, contiguous; rachilla scaberulous, disarticulating above glumes and between florets; glumes slightly unequal, upper nearly as long as spikelet, firmly membranous, keel scaberulous, apex abruptly acuminate, lower glume 1–3-veined, upper glume 3–5-veined; lemmas broadly lanceolate, thinly leathery, rounded on back, 5–7-veined, veins smooth, not raised, scabrid above middle, apex scarious, usually 3-denticulate, sometimes mucronate; floret callus subacute, bearded laterally with stiff hairs; palea subequal to lemma, narrow, flat, apex sharply 2-denticulate.

小穗侧面压扁，披针形长圆形，小花数个，邻接；小穗轴高于颖片微糙，脱节和在小花之间；颖片稍不等长，上面近等长小穗，坚定膜质，龙骨状，先端突然渐尖，下部颖片1-3，上面颖片3-5－脉；宽披针形的外稃，在背面上薄革质，圆形，5-7－脉，平滑的脉，不凸起，在中部以上，先端，通常3－具小齿，小花结茧稍尖，用硬的头发侧面公然反对；内稃近等长于外稃，缩小，平，顶明显2－具小齿。

Calyx ovoid to campanulate, declined in fruit, glandular outside, glabrous or occasionally villous at throat inside, limb 2-lipped; upper lip 3-toothed, middle tooth circular to obovate, margin winged, decurrent, lateral teeth shorter; lower lip 2 toothed, teeth narrower, apex acuminate to spinescent, sometimes approximate.

卵球形的花萼到钟状，在果期下弯，在外面具腺，或偶有具长柔毛在喉部在里面，二唇形的瓣片；上唇具3齿，中间齿圆到倒卵形，具翅的边缘，，侧齿短；狭窄下唇2齿，齿，对具刺，有时紧靠的先端渐尖。

The results showed that the surface architecture and ultrastructure of gills filaments and secondary gill lamellaes of the largemouth and the blue gill were similar to other teleosts.

结果表明：大口黑鲈和蓝鳃太阳鱼鳃的表面结构和微细结构与其它硬骨鱼类基本相似，鳃弓和鳃耙表面被具环形微嵴的上皮细胞所覆盖，表面观凹凸不平；大口黑鲈鳃耙的尖齿直径和长度分别为蓝鳃太阳鱼鳃耙的3.4~3.8倍和2.1~3.8倍；两种鱼的鳃丝末端略为膨大呈勺状，鳃丝表面都具有规则或不规则分布的环形微峙、沟、坑、孔等结构；大口黑鲈鳃丝之间的距离相对较大，蓝鳃太阳鱼的鳃丝间距离仅为大口黑鲈的83%~88%；大口黑鲈鳃小片的高度、厚度和片间距都大于蓝鳃太阳鱼。

From the simulations, we can see the distributions and transmission of strain and stress in model under different loadings, and the results explained the fractures very well. 4. Similarly, a axis FEM model was constructed to simulate the axis fracture, emphasized on the odontoid process. Three kind of odontoid process fracture were analysed on this model, which occurred respectively on the tip, the middle and the fundus. The results gave the best angle to fracture the odontoid process of the axis.

四、建立了枢椎的三维有限元模型，对枢椎齿状突骨折机理进行了理论上的研究，重点针对临床上齿突骨折的三种分类：1、齿突尖骨折；2、齿突腰部骨折；3、齿突基底部骨折，赋予齿状突在矢状面沿各种角度下受力条件，模拟衰椎前弓、襄椎横韧带以及CZ－3棘间韧带对枢椎造成的暴力破坏，确定了最可能引起齿状突暴力骨折的受力角度。

Similarly, a axis FEM model was constructed to simulate the axis fracture, emphasized on the odontoid process. Three kind of odontoid process fracture were analysed on this model, which occurred respectively on the tip, the middle and the fundus. The results gave the best angle to fracture the odontoid process of the axis.

四、建立了枢椎的三维有限元模型，对枢椎齿状突骨折机理进行了理论上的研究，重点针对临床上齿突骨折的三种分类：1、齿突尖骨折：2、齿突腰部骨折：3、齿突基底部骨折，赋予齿状突在矢状面沿各种角度下受力条件，模拟寰椎前弓、寰椎横韧带以及C2-3棘间韧带对枢椎造成的暴力破坏，确定了最可能引起齿状突暴力骨折的受力角度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。