Especially for the fractures which are not perforated the formation, the flow process in this system is a coupling flow about the three-dimensional reservoir and the two-dimensional fractures.
尤其对于未贯穿油层的水平井压裂这一增产措施来说，其流动过程也是油藏内三维流动与裂缝内二维流动相耦合的渗流过程。
The people here are so poor that all road signs-there are not many-are deliberately perforated, for otherwise they would soon be removed and turned into POTS and pans.
这里的人们穷到极点，为数不多的路标都得全部专门打上孔洞，不然，很快就会卸走，变成铁锅和盘子。
These perforated aluminum panels are not only serve as architectural elements, but also help to block the ambient noise, and allow light and air to enter without sacrificing privacy.
这些多孔铝板不仅作为建筑构件，也有助于阻挡环境噪音，在不影响隐私的情况下让光线和空气进入。
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