嵴

The datum that 40 lumbars had been scanned by Electrum Beam CT were converted into the soft Mimics 8.1 and reconstructed 3D lumbar image. The distance from the entrance point to pedicle axis and the inserting safe range of transverse section angle were measured.

在40例腰椎CT三维重建图像上应用人字嵴顶点法、Magerl法及Roy-Camille法模拟置钉，测量进钉点至椎弓根轴线的距离及置钉水平面角的安全范围，比较三种方法在腰椎各节段安全性的差异。

By means of the frequency analysis with the Bode figures, we studied the effect of the index of the cupula and the endolymph, respectively.

根据系统频率响应的Bode图，得到了壶腹嵴和内淋巴液的粘弹性指标和对于系统的不同控制作用。

It is showed that the index of the cupula controls the magnitude of the amplitude and phase in low frequency, and the index of the endolymph characterizes the critical frequency of the system.

其中，壶腹嵴的粘弹性指标α主要控制系统在低频段的幅值和相位值，而内淋巴液的粘弹性指标β则主要决定了系统的临界频率和低频截止频率。

In type Ⅰ, the exospore is smooth and the surface ornamentation, which is reticulate, cristate, echinate or rugate, is formed by the perispore.

结果表明，该科植物的孢子可分为3种类型：（1）孢子球形，三裂缝；周壁较厚，疏松地包在孢子之外；外壁光滑，表面纹饰由周壁形成，呈网状、嵴状、刺状或皱状。

Cystic and expansile changes, 1 cystic, 1 expansive, 2 osteolytic, 6 irregularly thickened bony cortex, 5 surrounding bone sclerosis, 2 periosteal reaction, 2 spotty calcification, 3 irregular crest of bone in lesion and 4 soft tissue mass.

骨皮质不规则增厚6例，病变周围骨质增生硬化5例，伴骨膜反应2例，病变区内见斑点状钙化2例，有不规则骨嵴3例，软组织肿块4例。

The influences of INA were as follows: The mulcher of pollen parietes was disintegrated or disappeared in certain section and even the entire extine was deleted. The injuries of organelles in the pollen were demonstrated by plastosome peplos imperfect, vesicle sterility; concentric circles of the endoplasmic reticulum or fold arranged, to form the membranal inclusions by enwrapping part of the cytoplasm, and decrease of ribosome amount.

INA细菌对花粉的超微结构的影响表现为：使花粉壁的覆盖层在某些区域解体消失或整个花粉外壁缺失；使花粉中的细胞器受到破坏，包括线粒体被膜不完整，嵴呈囊泡状；内质网呈同心圆卷绕或折叠状排列包围部分细胞质而形成膜内含物；核糖体数量明显减少等。

The streptomycin perfusion of labyrinth via a fenestra of LSC could treat disabling Meniere's disease and other dizziness caused by inner ear disorder by selectively destroying the sensory epithelium of utricular macula and three canal cristae.

经水平半规管开窗链霉素迷路灌注术可以通过选择性破坏椭圆囊斑和三个半规管腹壶嵴感觉上皮根治难治性梅尼埃病和其它内耳疾病引起的眩晕或头昏。

The raw data was processed by using axial, coronal and double oblique multi-planar reformation; Images obtained were graded in terms of quality with a 5-point scale(5=excellent, 4=good, 3=fair, 2=poor, and 1=nondiagnostic). In grading image quality at axial MPR, The radiologic specialists focused on the subarcuate fossa, tendon of tensor tympani, facial recess, vestibular aqueduct and pyramidal eminence, In grading image quality at coronal MPR, attention was given to the scute, crista transversa, fenestra cochleae, lateral malleal ligament and snake eyes signature of cranial nerve, In the grading of the image quality at double oblique MPR, the radiologic specialists concentrated on the malleus, incus, stirrup bone, upper bony semicircular and aquaeductus fallopii, and then to implement statistical analysis. In order to choose the minimum tube current values and the maximum pitch that can satisfy the diagnosis request, image quality of axial, coronal and double oblique reformation images was compared with different tube current groups. 15 ears of volunteers were used to test the validity with the scanning parameter. Subsequently noise, MTF and dose length product were measured by phantoms in different tube current and pitch, the parameters obtained were compared and taken into statistics analysis.

扫描模式使用临床常用的颞骨螺旋扫描方式：管电压120 kV，准直宽度20×0.6 mm，视野200 mm，重建矩阵512×512，旋转时间1 s/r，重建层厚0.6 mm，重建间隔0.3 mm，分别改变管电流(380、300、200、160、120和80 mA)和螺距(0.8、1.0和1.2)进行扫描和重建，然后对颞骨进行横断面、冠状面和双斜面多平面重组，于重组后的横断层面图像上选取弓形下窝、鼓膜张肌腱、面神经隐窝、前庭导水管和锥隆起5个解剖结构，冠状面重组图像上选取盾板、横嵴、蜗窗、面神经的蛇眼征和锤骨外侧韧带5个解剖结构，双斜面重组图像上选取锤骨、砧骨、镫骨、上骨半规管和面神经管5个解剖结构，在双盲的情况下由放射学专家分别对各管电流和螺距下扫描的重组图像进行评分，随后进行统计学处理，从中筛选出满足诊断要求的最低管电流值和最大的螺距，分别采用患者25例(15耳)用该管电流值和螺距验证其可行性；然后利用模体分别测试各管电流和螺距下的图像的空间分辨率、噪声及其剂量长度积，并对测试所得参数数值进行比较和统计学处理。

The first experiment is the derivation and cultivation of human embryonic germ cell.

实验一是有关人类胚胎生殖嵴干细胞的分离培养。

A natural ridge; a hogback.

马背岭一种天然的山脊；陡峻的嵴

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。