两尖的

The height of a whole tooth is the distance from the tip of the tooth to the bottom of the gullet in front of it.

全齿的高度是指锯齿尖到两个齿尖间隙凹槽底部的距离。

Three patients died 109, 180, and 659 days after surgery, respectively, the first patient after tricuspid valve replacement and the latter 2 after tricuspid valvuloplasty.

术后分别有三个病人在109天、180天和659天死亡，他们是第一例行三尖瓣置换术和最后两个行三尖瓣成形术的患者。

The influence of sweep angle and taper ratio on the characteristics of wingtip stalling is discussed.

讨论了后掠角和尖削比这两个机翼外形参数对翼尖失速特性的影响。

The forest communities with this species can be divided into six groups, which are Cyclobalanopsis stewardiana-Sinarundinaria nitida community, Cyclobalanopsis stewardiana + Quercus engleriana + Carpinus viminea-Sinarundinaria nitida community, Cyclobalanopsis stewardiana-Euryia brevistyla community, Rhododendron ririei + Cyclobalanopsis multinervis-Illicium simonsii community, Fagus lucida + Cyclobalanopsis multinervis + Cyclobalanopsis stewardiana-Sinarundinaria nitida community and Cyclobalanopsis stewardiana-Camellia cuspidata-Illicium simonsii community respectively.

通过使用双向指示种分析和无偏对应分析两种方法进行研究的结果表明，梵净山树干附生尖叶拟船叶藓在群落水平上的分布与森林群落类型相对应，其所在群落可以分成贵州青冈－箭竹群落、贵州青冈＋巴东栎＋雷公鹅耳枷－箭竹群落、贵州青冈－短柱柃群落、大钟杜鹃＋多脉青冈－野八角群落、亮叶水青冈＋多脉青冈＋贵州青冈－箭竹群落和贵州青冈－尖叶山茶－野八角群落6类树附生苔藓植物群落类型。

This suggests that the effects of temperature on growth of the two coral species were different. Growth rates of S. hystrix at 25℃ were stable and higher than those of S. pistillata. However, the effects of temperature on growth rate of S. hystrix may be modified by other factors (e.g., mesocosm effect) in higher or lower temperatures. The mortality of S. pistillata in three temperature treatments was very low, while the partial mortality of S.

这些结果显示，两种珊瑚在不同温度下的生长反应有所差异，在适温环境下，尖枝列孔珊瑚的生长稳定且高於萼柱珊瑚，但萼柱珊瑚却会受到其他因素影响；在较高和较低温时，萼柱珊瑚生长没有受到生态箱效应影响，而温度对於尖枝列孔珊瑚生长率的影响可能受到生态箱效应而改变。

The clinical characters of oligodontia concluded from this study are following:(1) There is significant difference that more teeth absent and more existent teeth anomalies in patients of oligodontia/S group than in patients of oligodontia/I group, and the peg-shaped upper lateral incisor is the most frequently affected teeth with shape anomaly.(2) Both of the two groups have no significant differences in number of teeth missing between maxilla and mandible as well as that between left and right side.(3) The distribution of teeth missing is bilateral symmetry in both groups, but the frequency of teeth lost are different: excluding the third molar, in oligodontia/I group, the lower second premolar is the most frequently congenitally missing tooth followed by the upper lateral incisor, while in oligodontia/S group, the most frequently missing teeth are mandibular canine and maxillary lateral incisor. Nevertheless, the first molars are the most stable teeth in both groups.(4) In oligodonita/I group, the mean mesiodistal dimensions of all type of existent teeth are significantly smaller than normal value. It is implied that oligodontia is not an isolated phenomenon, but is related to a complex of other dental changes.

对于口腔多个恒牙先天缺失的临床特点有以下初步结论：(1)综合征型先天缺牙患者较单纯型先天缺牙患者恒牙缺失数目更多，平均分别为23.9个和14.9个，且现存牙齿有更多的形态异常，分别为7／10例（70％）和6／22例（27.3％），其中最常见的是上颌侧切牙畸形；(2)两种类型的多个恒牙先天缺失患者的缺牙数目在上下颌及左右侧之间均无差别；(3)两种类型的多个恒牙先天缺失患者在缺失牙位上均呈对称分布，但在具体牙位上有所差异：不计第三磨牙，单纯型先天缺牙最常缺失的牙位是下颌第二双尖牙、其次为上颌侧切牙；而综合征型先天缺牙最常缺失的牙位是下颌尖牙和上颌侧切牙；无论何种情况，第一磨牙均为牙列中最稳定的牙齿；(4)在单纯型先天缺牙患者中，现存恒牙的牙冠宽度较国人正常值偏小，差异显著，提示牙齿形态与多个牙先天缺失有一定相关性。

Methods 184patients（age18～60）with184infected permanent teeth were randomly divided into two groups.The experimental group was filled with the VITAPEX paste plus gutta percha.

在临床选择18～60岁的牙髓坏死、慢性根尖周炎病例184例，184颗患牙，随机分为两组，第一组采用VITAPEX糊剂加牙胶尖一次法根充治疗完成。

Circumstance.②Help an assurance bad tooth:Insert tooth gum such as the Lou tube of of two tooths the point make a tooth slice check, can show tooth gum the point is been partial to to some one tooth.

帮助确定病牙：如两牙之间的瘘管插入牙胶尖作牙片检查，可以显示牙胶尖偏于某一牙齿。

Coning and quartering method: put the sample onto the steel plate in the form of a cone; each scoop shall be inserted from the top of conical to make it spread along the top evenly, and pay attention not to misplace the center of cone; do it at least 3 times and mixed thoroughly; then flatten the top and use the cross plate from top to bottom to divide into 4 equal segments, randomly take out 2 oppositesegments and do it repeatedly for several times and finally divided into not less than the minimum retained quantity.

圆锥四分法：将样品置于已用样品刷好的钢板上，堆成圆锥形，每铲由圆锥顶尖落下，使其均匀地沿锥尖散落，注意勿使圆锥中心错位，如此反复至少移堆三次，使其充分混匀，然后将锥尖压平，用十字板自上插下，分成四等份，任取两个对角的等份，重复操作数次，缩分至不少于最少留样量。

Spinel-rich spherule is a special Ca-, Al-rich inclusions in chondrites. Two spinel-rich spherules (GRV 020025-3R18 and GRV 021579-3R15) have been found from GRV 020025 and GRV 021579 carbonaceous chondrites collected from the Grove Mountains, Antarctica.

富尖晶石球粒状CAI是球粒陨石中一种特殊类型的CAI，在南极格罗夫山碳质球粒陨石GRV 020025和GRV 021579中共发现两个富尖晶石球粒状CAI-GRV 020025-3RI8和GRV 021579-3RI5。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。