文中介绍了潜山油藏特点及采用二级注水泥方法，采用连续打开式分级箍、水泥伞。
The features of buried hill reservoir are described, and the use of two-stage cementing method, continuous open stage collar and cement basket is also presented.
当你打开收音机时，你听到的背景嘶嘶声就是“噪音”；在播放开式磁带或盒式录音带时，你也能在没有声音的磁带段听到噪音。
Noise is the background hiss you hear when you turn your receiver way up, and you can also hear it during quiet passages when playing open reel or cassette tapes.
当你打开收音机时，你听到的背景嘶嘶声就是“噪音”；在播放开式磁带或盒式录音带时，你也能在没有声音的磁带段听到噪音。
Noise is the background hiss you hear when you turn your receiver way up, and you can also hear it during quiet passages when playing open reel or cassette tapes.
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