在试验资料的基础上，根据裂缝出现和开展的基本原理，找出影响裂缝宽度的主要因素。
On the basis of these data, the main factors affecting the crack openings are found according to the basic principles on the emergence and development of cracks.
在预应力混凝土塔筒的挠度和裂缝宽度计算中，截面的刚度是必不可少的基本资料。
To do the calculations for the deflection and the flaw width of pre stressed concrete tower drum, the stiffness of the cross sections is essentially basic data.
本文从整治河段的实际情况出发，在分析黄河北干流水沙特征基础上提出用实测河床断面资料确定航道整治线宽度的方法—河床断面法。
This paper suggests a method to determine waterway's width by analysing the properties of water and sedimentation of the Northern Main of the Yellow River.
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