四线的

Then, the article uses financial analysis tool to draw the conclusion that the forth line of Guangshen Railway is a fault investment decision.

依据内外两方面的分析，辅之以财务管理分析工具，最终导出增建广深第四线项目是一个失误的投资决策的结论。

Through studying the intersection of paraboloid of revolution and cylinder , the author concluded that the horizontal projection of the intersecting lines—, is the famous Four-order algebra curve-Perseus curve.

通过对回转抛物面与圆柱面相交的研究，得出交线的水平投影曲线——为四次代数曲线——Perseus座曲线的结论。

Results indicated that the addition of these two fractions in atmospheric residue exhibited negative effect on the colloidal stability of residue system, and the negative effect of adding FCC slurry oil was stronger.

结果表明，加入两种油品后，体系的稳定性均呈下降趋势；不同油品对渣油胶体稳定性的影响程度不同，加入减四线抽出油后体系的稳定性比加入催化裂化油浆时高。

The academy developed science of Russia Leningrad spin to make core yarn with polyester fiber, cotton fiber makes braid, twist two, three-ply those who mix 4 is right twist the manufacturing technology to excel in line of force.

苏联列宁格勒纺织科学研究院研制了用聚酯纤维作芯纱，棉纤维作编织层的，一次捻成两股、三股和四股的右捻向高强力线的生产工艺。

Constraint of the middle truss on the crossbeams approximates to absolute rigidity and the distance between the stringer and the middle low chord are small in the four-line through truss bridge with three main trusses, which produces much larger horizontal bending stresses of the crossbeams as compared with two-truss bridges.

在四线铁路三主桁下承式钢桁梁桥中，中桁对横梁的约束近于绝对刚性，纵梁离中桁下弦杆的距离较小，使横梁的面外弯曲应力较二主桁桥梁大得多。

The key point of this paper is the software design and hardware design for on-line signature data acquisition system based on four-line resistance touch panel.

本文研究的重点是基于四线电阻式触摸屏的在线签名数据采集系统的软硬件设计。

The topology can realize three-phase four-line AC output, and make the size and weight of inverter small.

这种拓扑的最大的优点是可以在负载为三相不对称时形成三相四线输出，而系统的体积和重量又比较小。

This dissertation is focus on the study of shunt converter of Unified Power Quality Controller for three-phase four-line distribution power system which capacity is 10kVA.

本文以校&十五&专项科技基金课题&柔性供配电系统(配电FACTS，FACDS)&为研究背景，重点研究了用于配电系统的三相四线制统一电能质量控制器中的并联部分，容量为10kVA。

The font of China's urbanising appetite is no longer its coastal conurbations but so-called third and fourth tier cities mostly in inland areas.

中国城市化欲望的源头不再是沿海大都市，而是所谓的三、四线城市，而且大多位于内地。

It was anti-oxidant and stable that the purpose removed the lubricating oil ideal component of Central Africa, improved oil, improve glueing the warm performance and colour of oil, reduce acid value and incomplete charcoal value.

从蒸馏来的减压二，三，四线和丙烷脱沥青来的残渣油料，首先经过酚精炼，然后经脱蜡，补充精制，调合生产成品润油油。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。