cross sectional area

The resistance of a conductor varies directly with its length, conversely withits cross-sectional area .

导体的电阻与其长度成正比, 与其 横截面积 成反比.

the 1 ∶ 3 ∶ 5 cross sectional area ratio of the sprue, runner and gate and the rational fissure with cushion structure make the molten metal fill stably in the mould cavity, that reduce the secondary oxide inclusion and the invading gas;

直浇道、横浇道和内浇道截面比为1∶3∶5，并配合带缓冲结构的合理缝隙，可保证型腔内液面上升平稳，减少铸件内部二次氧化夹杂和混入性气体；

This shows that the resistance of an electric conductor is inversely proportional to its cross-sectional area.

这表明,导体电阻的大小与导体 横截面 的大小成反比.

It is verified that the periodic change of cross-sectional area and moment of inertia enforces the excitation of the pulsatile flow and the displacement oscilla-tion of the latex tube occurs easily. This agrees well with the experiment results.

证实了截面积和截面惯距的周期变化加强了脉动流的激励、容易使乳胶管发生位移振荡，这与实验结果在定性上是吻合的。

The resistance is halved if the cross-sectional area is doubled.

如果截面积增加一倍,则电阻减少一半.

To inspect simultaneously the loss of metallic cross sectional area and localized fault of a coiled tubing, the magnetic circuit of an integrated sensor is designed.

为了在现场能同时检测连续油管金属截面损耗缺陷（LMA）和连续油管局部缺陷（LF）两类磁特性完全不同的缺陷，做了连续油管缺陷综合检测传感器的磁路设计。

Key words: lumbar spinal morphology, spinal stenosis, positional MRI, axial load, dural sac cross-sectional area.

要害词: 腰椎形态学, 椎管狭窄, 体位MRI, 轴向负荷, 硬脊膜囊横断面积.

Development of Model XDC Explosion-proof Instrument for Measurement of Roadways' Cross Sectional Area

XDC防爆型巷道断面测量仪的研制

The degree of self-induction is proportional to the cross-sectional area of the circuit.

而自感的程度与线圈横切面的面积成比例.

Methods A cluster sampling cross sectional survey was carried out on rural residents over 35 years old in three gorge dam area.

方法以整群抽样的方法对三峡坝区农村35a以上居民进行原发性高血压流行病学调查。

The wet weight and the cross sectional area of the anterior tibial muscle was smaller.

肌纤维截面积、有髓神经纤维数均减少.

· RESULTS: There were statistically significant changes in shape parameters ( including rim area, rim volume, max cup depth, mean retinal nerve fibre layer thickness and cross sectional area, et al) ( P < 0.05).

结果：盘沿面积、盘沿体积、最大视杯深度、平均视网膜神经纤维层（RNFL）厚度、RNFL截面面积等视盘参数前后2次检查结果差异有显著性意义（P

Finally, by the digital simulating to static determinate and indeterminate truss structures, the relationship between the entropy function of structure and the cross sectional area of bars are revealed.

最后通过对静定与静不定杆系结构的数值模拟，揭示了结构的熵函数与杆系截面积之间的关系。

Result: There was no significant difference cross-sectional area of the cricoid cartilage of these three groups.

结果: 与对照组比较,实验组兔环状软骨管腔面积较对照组差异无统计学意义.

The results of performance measurement test show that tensile-strength, contraction of cross sectional area, elongation percentage, dynamic ductility of the weld all exceed their base metal.

焊后试件的性能测试结果表明，焊接接头的拉伸强度、断面收缩率、延伸率及冲击韧性均已超过母材。

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。

Cross-sectional study on the community medical care service of chronic diseases of the elderly in an urban area

老年人慢性病的社区医疗保健需求研究

Depending on the postures, the mean dural sac cross-sectional area and AP dural sac diameter changed.

硬脊膜囊的平均横截面积和前后径随体位的不同而发生变化.

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制梁实验样本的相对劲度，并研究结果如何与理论一致。

Then , the regression equation of height to the mini-cross sectional area of femoral neck was concluded.

应用回归与相关分析, 得出成人身高与股骨颈最小横截面积的直线回归方程.

This is the electrical resistance per unit length and cross-sectional area of a magnetic core.

具有单位截面积和单位长度的磁性材料的电阻.

Coil resistance is determined by the cross-sectional area and length of the wire used the coil.

线圈电阻是由线圈导线的横截面积和长度决定的.

Bus bars shall be of the same cross-sectional area throughout the switchgear.

整个开关柜的母线截面均应相同.