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1·Method cluster sampling and cross sectional study.

方法整群抽样，横断面调查。

2·The cross sectional transitions are smooth to avoid dead spaces and minimize pressure loss.

横截面的平滑转变避免了死空间，并且使压力损失达到最小。

3·The pile tube can be of arbitrary cross sectional shape and is divided into cylindrical bending strips.

桩管可以是任意截面形状的，并分割为相应的柱状弯曲条。

4·The connection between cells shall be made of lead or lead alloys and have enough cross sectional area.

电池的连接物应使用铅材料或者是铅合金并有足够的交叉的可组合区域。

5·The ratio of aircraft length to maximum cross sectional area also influences the intensity of the sonic boom.

飞机的长度和最大横截面面积之比也会影响音爆的强度。

6·Using nonlinear finite element method, the compression load deflection of the seal was analyzed and cross sectional shape of the seal was optimized.

利用非线性有限元法分析了密封条的压缩受力变形特性，根据结构力学原理对密封条横截面形状进行了优化。

7·The hot zone is formed by cutting a double spiral slot which reduces the cross sectional area through which current flows, resulting in higher resistance than the cold end.

发热部是双螺旋切槽，在电流通过时可以减少其横截面积，因而发热部的阻值比冷端部的阻值大。

8·Students will determine the relative stiffness of two aluminum beam test specimens of equal cross sectional area but different cross-sectional shape and see how they conform to theory.

学生要确定两个横截面面积相同而形状不同的铝梁实验样本的相对刚度，并研究结果如何与理论一致。

9·With the model, the cross sectional shape of a pressing is analyzed, and the public feasible zone of sectional angle is determined, and a group of target functions are created as optimization objects.

利用该模型对冲压件截面形状进行了分析，确定了截面转角的公共可行域，并建立了一组目标函数作为优化对象。

10·These relationships between social and financial performance can be rationalized by multi-factor models for explaining the cross-sectional variation in returns, but not by industry effects.

社会绩效与金融业绩间的这些关系，可以通过解释回报中代表性变量的多因子模型进行合理化，却难以通过产业效应起到同样效果。

截面的

1·The pile tube can be of arbitrary cross sectional shape and is divided into cylindrical bending strips.

桩管可以是任意截面形状的，并分割为相应的柱状弯曲条。

2·The cross sectional transitions are smooth to avoid dead spaces and minimize pressure loss.

横截面的平滑转变避免了死空间，并且使压力损失达到最小。

3·It was studied that the effects of dyeing conditions on the dye-uptake, cross sectional diameter, mechanical properties, and elastic recovery properties of PTT filament.

研究了染色条件对聚对苯二甲酸丙二酯（PTT）纤维上染率、纤维截面直径、力学性能和回弹性能的影响。

4·The feeding head shape of a die and a streamlined sprue runner were designed after an analysis on the cross sectional shape and the extrusion forming ability of PA66 material.

通过对异型材截面形状及原材料挤出成型性能分析，设计了正确的口模形状及合理的流线形流道；

5·Our fibre is a single staple polyester fibre with a cross sectional diameter of around 15 microns, normally cut to 75mm, 50mm and 38mm lengths with other lengths available upon request.

我们的产品是单一的聚酯合成纤维，其横截面的直径为15微米，通常长度切割为75毫米。你也可以选择38毫米和50毫米的长度，连续的成卷纱线即将上市。