椭圆形井筒

elliptical shaft的用法和样例：

例句

The mine flooding happed during construction of the air shaft in Qidong Coal Mine.祁东煤矿风井在建井过程中，发生钻井井壁突水事故，井筒被淹。
Cement injection of perforating holes in a frozen pipe is a wholly -new technology for consolidating shaft wall rock and stopping water of frozen shafts in coal mines.冻结管射孔注浆是在对石油输油井射孔技术和地面注浆技术进行研究的基础上，开发出的一种用于煤矿冻结井筒围岩加固和堵水的全新技术。

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VOA慢速英语2012 THIS IS AMERICA - Catching Up With Vivica A. Fox, Shaft, the Hulk and TV's Batman

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A new galaxy is formed where, instead of the discs that the original galaxies have, where all the stars are going around more or less on a plane. Instead the stars are going every which way just like the elliptical galaxies that we see. And so we are

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