查询词典 sectional

Methods: Cross sectional study of 387 retinal vessels (193 arterioles, 194 veins) from 28 eyes of 14 children (aged 10 years).

来源于14名10岁儿童的28只眼的387条视网膜血管（193条动脉，194条静脉）的横向研究。

Methods Since 1995, cross-sectional sentinel surveys have repeatedly been conducted in China. The target populatio ns in these surveys were STD clinic attenders, prostitutes, drug users, long dis tance truck drivers, pregnant women, and blood donors.

从1995年起以重复横断面调查的方法对性传播疾病门诊就诊者、暗娼、吸毒者、长途卡车司机，以及孕产妇和供血员进行监测。

Recent developments in the research on the geology and geochemistry of the newly-discovered clayey breccias at the lop of the Xiaochaka Formation in the Juhuashan, Xiaochaka and Shishuihe areas, Qiangtang Basin, northern Tibet have disclosed that mineral compositions, textures and structures, occurrences and sectional architectures of the clayey breccias agree well with those of the paleo-weathering crust in these areas. Compared with the bedrocks, the paleo-weathering crust is characterized by the leaching out of CaO and CO2, and relative enrichment of SiO2, Al2 O3, Fe2O3, K2O, Na2O, MnO and P2O5. The clayey weathered residues in the paleo-weathering crust are characterized by marked enrichment of REEs, much higher contents of LREEs than those of HREEs, markedly positive Ce anomalies and negative Eu anomalies, and a noticeable increase in other element contents besides Mo, Sn and U from the clayey weathered residues.

对最近在藏北羌塘盆地菊花山、肖茶卡、石水河等地区新发现的肖茶卡组顶部的粘土质角砾岩的地质、地球化学特征研究表明：其岩石矿物成分、结构构造、角砾层产状及剖面演化序列等与古风化壳的形成及其特征较为一致；相对于基岩，古风化壳的主量元素表现为CaO、CO2的淋失和SiO2、Al2O3、Fe2O3、K2O、Na2O、MnO、P2O5等不同程度的相对富集；古风化壳中的粘土质风化残积层的稀土元素具有明显的富集，表现为LREE含量远大于HREE的特征，存在明显的Ce的正异常以及Eu的负异常；微量元素除Mo、Sn和U外，粘土质风化残积层的其余元素含量均有明显的增加。

It is revealed that the asymmetric vortices over slender body are formed the breakaways of higher position vortex and generation of new vortex, which are alternately developed on the both sides along the body axis. The correlation between asymmetric vortices structure and distribution of sectional sideforce coefficient has been obtained. A physical model of asymmetric multi-vortices flow structure is developed according to zonal flow analysis.

在此基础上揭示了非对称涡系是通过细长体两侧背涡沿轴向交替脱落、新生而形成的，给出了非对称涡系沿轴向演化、发展的流动结构和截面侧向力分布特性之间的相关关系，在分区分析的基础上提出了非对称涡系结构的物理模型。

According to the reality of engineering, the article makes a deep study of the electricity-magnetism detection of the Loss of metallic cross-sectional area of wire rope, brings forward a designing method of LMA detecting sensor based on the theory of magnetic bridge, develops out a data collecting and dealing system that is assorted to it, and accomplishes all the designing and confecting work of the hardware and software of the system.

提出了一种基于磁桥路原理的钢丝绳金属截面积检测传感器的设计方法，研制出与之相配套的数据采集与处理的CPU系统，完成了系统各部分软硬件的开发与调试工作。

The formulae for computing the sectional properties and mass properties of the main girders and the crossbeams were given. Then the dynamic characteristic analysis of two given rigid frame bridges were carried out using this model, the single beam model and the solid model respectively for comparison.

基于剪力柔性梁格理论提出了能够充分考虑薄壁箱梁的自由扭转刚度、约束扭转刚度和转动惯量的三梁式计算模型，推导了模型中各主梁截面特性和质量分布的计算公式，以及横梁刚度特性的计算方法。

In this mode,l a grid- section model is introduced to determine the sectional tangent stiffness of reinforced concrete beam element and analyze its degeneration process, and three-node friction-sliding tendon elements are employed to analyze the friction and sliding of external tendons at deviators or sliding blocks.

引入分块截面模型确定钢筋混凝土梁单元截面的切线刚度和分析其退化过程，采用三节点摩擦滑移预应力筋单元分析体外预应力筋在转向块或滑块处的摩擦滑移效应。

When the pump is installed on the position higher than the liquid level, it is necessary to mount a foot valve on the end of the suction pipe and its throat area should be 50% larger than the sectional area of the suction pipe.

泵安装在高于液面位置时，应在吸入管端装底阀，底阀喉口面积应大于吸入管截面积的百分之五十。

When the pump is installed on the position higher than the liquid level, it is necessary to mount a foot valve on the end of the suction pipeits throat area should be 50% larger than the sectional area of the suction pipe.

泵安装在高于液面位置时，应在吸入管端装底阀，底阀喉口面积应大于吸入管截面积的百分之五十。

Concept of distribution of disease、arithmetic of indicator of disease frequency、prevalence intensity classification、cross-sectional analysis method and analysis method of birth cohort study、two basis in pathogeny estimation of Immigration Epidemiology.

疾病分布地概念、疾病频率指标算法、流行强度分级、横断面分析法和出生队列分析法、移民流行病学在病因判断上的两个根据。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。