Basically plain masonry is walling material, strong in compression and relatively weak in tension.
基本上简单的石工正在墙壁材料，强壮的在压缩中和相对地弱的在紧张方面。
Concrete is strong in compression, but weak in tension its tensile strength varies from 8 to 14 percent of its compressive strength.
具体是在压缩强劲，但在张力弱：其拉伸强度变化从8至14%，其抗压强度。
In addition this method contains weak interference principle of main cable displacement, near influence principle of hangers force and forward alternately tension method.
其中这套方法主要包括：主缆位移弱相干性原则、吊杆内力相邻性原则、交替前进张拉方法。
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