查询词典 cavities

MRI is the best diagnostic procedure for syringomyelia associated with intraspinal neoplasms;The postcontrast scan is very important to differentiate the syrinx cavities and tumoral cysts from normal spinal cord. The pathogenesis of syringomyelia has been discussed.

MRI是本病最有效的检查方法；增强扫描对于鉴别脊髓内空洞、肿瘤囊变与正常脊髓有十分重要的意义。

Character 2 discusses seismic moment tensor representation of explosions in ellipsoidal cavities and their far-field radiation patterns.

第二章讨论了一般形状的椭球腔中的爆炸的地震矩张量表示及其在远场的地震波辐射图案。

By this approach the seismic moment tensor representation for explosions in ellipsoidal cavities and their seismic radiation patterns in the far field is obtained analytically.

应用这一方法作者首次求出了一般形状的椭球腔中的爆炸的地震矩张量的解析表达式及其远场地震波辐射图案。

This dissertation discusses four problems that have relations with these topics. These problems are, i seismic moment tensor representation for explosions in ellipsoidal cavities and their seismic radiation patterns in the farfield; ii seismic waves from point sources in transversely isotropic media; iii yield-estimation by mb or mb for Chinese underground nuclear explosions and, iv simultaneously inversion for source parameters of underground nuclear explosions and parameters of apparent Lg Q for paths from source to stations.

本文讨论与此课题有关的椭球腔中的爆炸的地震矩张量表示及地震波辐射图案，各向异性介质中的点源激发的弹性波，由Lg波震级或Lg尾波震级估算地下核爆炸当量，由Lg波位移谱反演地下核爆炸震源参数及相关路径的Lg波视衰减参数等四个方面的问题。

The application and working process of throttle valve in injection mold of unbalanced cavities were introduced,and the key points of designing throttle valve was analysed.

介绍了节流阀在非平衡型腔注射模中的应用及模具工作过程，并分析了节流阀的设计要点。

Physicians should be vigilant of the incidence of MTR-TB for the middle-age patients which had received the treatment for about 4 years, 3 times, especially which had multiple tuberculous cavities and positive tubercle bacillus in sputum.

对疗程4年左右，治疗3次左右的青中年患者，尤其是肺部多发空洞的持续痰结核菌阳性患者，医师要高度警惕耐多药结核的可能。

The machine is canceled the underprop, wheel and axle are directly fixed on the reducer, so the machine is lightened its weight; the material cavity of the rotor is adopted a new style, such as trapeziform, roundness, multi-material cavities, it makes series of blowing, less spraying pulse.

本机型的设计取消了支撑架，轮轴直接固定在减速器上，减轻了重量；转子的料腔采用了新型的呈梯形、圆角、多料腔结构，使得进风连续，喷射脉冲小。

The machine is canceled the underprop, wheel and axle are directlyfixed on the reducer, so the machine is lightened its weight; thematerial cavity of the rotor is adopted a new style, such astrapeziform, roundness, multi-material cavities, it makes series ofblowing, less spraying pulse.

本机型的设计取消了支撑架，轮轴直接固定在减速器上，减轻了重量；转子的料腔采用了新型的呈梯形、圆角、多料腔结构，使得进风连续，喷射脉冲小。

Previously unreleased figures from the Centers for Disease Control and Prevention show that in 2003 and 2004, the most recent years with data available, 27 percent of children and 29 percent of adults had cavities going untreated.

之前疾病控制与预防中心的公布的最近几年采集的数据显示从2003到2004年，27%的儿童和29%的成人有未治疗的病牙。

So, in this paper, a circular cavity witha large radius is used to replace the straight boundary of thehalf space, then the half space problem can be changed tothe scattering problem of two circular cavities to the steadyincident P-wave . Having the aid of the mature cylinderfunction theory, the general solutions of the wave functionscan be given, and an infinite linear algebraic equations ofthe unknown coefficients in the wave functions can be gottenwith the boundary conditions and the Fourier complex seriesexpansion technology, the infinite linear algebraic equationscan be approximately solved by the finite trunction withsatisfying some definite precision, at the basis of thissolution of the equation, the variations and the lay-outs ofthe DSCF at the circular cavity boundary vs. the differentincident angles, the different embedded depths of thecircular cavity as well as the different dimensionless wavenumber of the incident P-wave.

为此，本文采用一个半径很大的圆孔来代替半空间的直边界，将该半空间问题转化为一无限大空间中两个圆孔对稳态P波的共同散射问题，借助于成熟的柱函数理论，通过写出问题波函数的一般形式解，利用问题的边界条件，并采用复数傅立叶级数展开技术将其化为一个仅包含问题波函数中未知系数的一无穷线性代数方程组，在满足一定计算精度的前提下，通过有限项截断进行近似求解，进而讨论了圆孔边界处的动应力集中系数随不同入射角、不同的圆孔掩埋深度、入射波的不同无量纲波数以及介质的泊松比变化和分布情况。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。