After door window is installed, appear directly tall the aperture of low, fan and casing is inhomogenous phenomenon, exist sometimes on wide below narrow or below wide on narrow issue.
门窗安装后，出现一头高一头低、扇和框的缝隙不均匀现象，有时存在上宽下窄或下宽上窄的问题。
2
Distribution of Triassic salt bed is very wide in Sichuan Area and the condition of salt rock creep resulting in casing collapse is existing.
四川地区三迭系盐岩层分布广泛，盐岩层蠕变挤毁套管的客观条件是存在的。
3
You can do basically anything here, just remember that the center of the wide end is what gets seen when you wear the finished bag, and some of the top edge will be folded over into a casing.