文章着重的论述了高低跨建筑出现沉降差的诸多因素及防治措施，并指出了“后浇带”的特点和可行性。
This paper discusses causation and preventing measure of settlement difference in high and low stride building, and points out characteristic and feasibility to use cincture constructing later.
雅安山地面积占94%，地势高低悬殊大，河流深切，水流湍急，大地构造位置跨西部地槽，东部地台。
The mountainous area accounts for 94% in Yaan. There is a great difference in the height of hypsography, and stream is rapid, and the tectonics cross the west geosyncline and east platform.
全球首创跨时代的节能缝纫机，自动高低位停针，定位准确；
The needle can be stopped accurately at high or low position.
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