共轭焦点

A vertical fractured well can bring out two-dimensional flow in the direction of normals of developing ellipse — conjugate ellipse isobar and hyperbola streamline bunches with the two ends of the fracture as their focuses.

垂直裂缝井采液时诱发地层中的平面二维椭圆渗流，形成以裂缝端点为焦点的共轭等压椭圆和双曲线流线族。

In the third- order nonlinearorganics materials with the delocalized π-electron system have alsobecome research focus due to their high 〓, value and fast responsespeed, which are very important in all optical process.

在三阶非线性光学性质方面，具有〓电子共轭体系的化合物或聚合物一直是人们研究的焦点，因为这类材料不仅具有高的〓值而且具有快的响应速度，这在全光过程中有着非常重要的意义。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。