单尖的

Tiger tooth namely canine teeth, be top two single sharp tooths of the Han, at the age of 23 outwardly Pi, be like the tooth of tiger quarrel very much, so call "tiger tooth".

虎牙即犬齿，就是上颌的两颗单尖牙，在十二三岁时向外毗出，很像老虎口角的牙齿，故谓"虎牙"。

Volcanic rocks contain plenty of mantle-derived xenoliths, including spinel lherzolites with subordinate wehrlite, dunite, olivine websterite, clinopyroxenite and garnet lherzolite , and few olivine, clinopyroxene and spinel xenocrysts.

火山岩中含有的地幔捕虏体类型主要有：尖晶石二辉橄榄岩、石榴石二辉橄榄岩、纯橄岩、异剥橄榄岩和单斜辉石岩；捕虏晶主要有橄榄石、单斜辉石和尖晶石。

Premolar is short, simple structure in front of three, single-pointed.

前臼齿短，前面的三个构造简单，单尖。

Objective: To investigate the root canal configuration and the incidence and location of the isthmus in extracted maxillary second premolar with single root.

目的：研究离体单根的上颌第二前磨牙根尖1—6mm处根管形态及根管峡部的发生率和位置的情况。

Firstly, based on the force acting on a single-particle, establish a discriminant formula of the sand threshold, and prove that the sand threshold belongs to the cusp catastrophe. Then establish the basic equation of the cusp catastrophe using coordinate transformation and catastrophe theory. Finally, while particle Reynold number and equivalend diameter are the state variables and Shields parameter is the control variables, we can obtain the model of cusp catastrophe of sand threshold, putting those variables into the basic equations of the cusp catastrophe. The model is derived from the mathematics, which has a certain mathematical theory foundation.

首先从单颗沙粒受力分析出发，建立沙床沙粒起动条件判别公式，进而证明了风沙起动属于尖点型突变；然后通过坐标变换和突变理论建立了尖点突变的基本方程；最后本文选择颗粒雷诺数和等效粒径作为控制变量，希尔兹参数作为状态变量，并把它们代入尖点突变的基本方程，经过拓扑变换得到风沙起动的尖点突变模型，并与前人的公式及实验数据进行比较。

Brown rhizomorph and hyphae can be seen on the seedlings'rhizome, main root and side root while nothing is on the tip of the root.It was found that rhizomorph on the surface of roots would die after inoculation in 90 days in pot.

子实体单生或丛生，出菇至成熟3 d~4 d，单个子实体重20.0 g~62.0 g；小粒咖啡苗的根茎、主根及侧根被茶褐色的菌索和菌膜包裹，而根尖及靠近根尖的侧根上没有菌丝和菌索生长或生长很少；盆栽小粒咖啡苗，在接种90 d后其根系表面的菌索死亡。

Flower solitary and terminal, androdioecious ,pedicel stout, glabrous; flowers fragrant, tepals 12 in 4 whorls, outer 3 tepals large, obovate, red, 4cm long, 2cm wide ,rounded at apex, attenuate at base, tepals of inner 3 whorls narrow-obovate-spatulate, white, 3-3.5cm long; stamens 30 ,2.5cm long, anthers 1.58 cm long, filaments short.

花单生枝顶，雄花和两性花异株，花梗粗短，无毛；花白色，芳香，花被片12，4轮排列，外轮3片较大，倒卵形，红色，长4cm ，宽2cm ，先端圆，基部渐窄，内3轮窄倒卵状匙形，白色，长3~3.3cm ，雄蕊30，长约2.5cm ，花药长约1.5cm ，花丝短，药隔伸出成短尖的附属物；两性花花被片与雄花相同。

Tiger tooth namely canine teeth, be top two single sharp tooths of the Han, at the age of 23 outwardly Pi, be like the tooth of tiger quarrel very much, so call "tiger tooth".

虎牙即犬齿，就是上颌的两颗单尖牙，在十二三岁时向外毗出，很像老虎口角的牙齿，故谓&虎牙&。

Basal leaves with petioles (0.5-)1.5-4 cm, ciliate with simple trichomes; leaf blade 1- or 2-pinnatesect, oblong or ovate in outline, 1.5-6 × 0.7-3 cm; ultimate segments linear-oblong, oblong, or rarely ovate, 1.5-15 × 0.5-3 mm, apex obtuse or subacute.

基生叶具叶柄(0.5-)1.5-4厘米，单的具缘毛具；轮廓的叶片1或2 pinnatesect，长圆形或卵形， 1.5-6 * 0.7-3 厘米；线状长圆形的末回裂片，长圆形，卵形的或很少， 1.5-15 * 0.5-3 毫米，先端钝的或近尖的。

The paper provided an effective method of estimating project and improving working characteristic of loading mechanism through making mathematics model and simulating curve of track and rate and acceleration and pawls power.

通过建立适当的装载机构数学模型，模拟单、双耙爪爪尖的轨迹、速度、加速度、耙取力曲线，并且通过改变转盘速度对轨迹各段的速度、加速度、耙取力的特性进行研究，为评价设计方案、改善装载机构性能提供一种有效的手段。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。