中生代构造快速沉降的沉积体的楔形展布表明盆地具有前陆岩石圈挠曲成因特征；
The Mesozoic rapid tectonic subsidence and wedge shaped sedimentary bodies indicate the origin of lithospheric flexure in the Chuxiong Basin.
椎环、弹簧、弹簧座以及卡环，辅助密封圈有“O”形橡胶圈和PTFE楔形环，静环材料都为石墨(M106K)。
Vertebral ring, spring, spring seat and clasp, auxiliary seals have "o" shaped rubber ring and PTFE wedge ring, quiet ring for graphite materials (M106K).
本文简要地介绍了装拆采油(气)井口楔形闸密封圈的一种专用工具。
This article gives a brief description of a special tool for assembling and disassembling of seal rings in the wedge-shaped gate valve for oil (gas) well-head assembly.
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