Polar surface waters most likely will become undersaturated for aragonite before the end of this century.
在本世纪结束前，极地海水表层很有可能变得对霰石不饱和。
In algebraic geometry, given a projective algebraic hypersurface C described by the homogeneous equation
and a point
its polar hypersurface Pa(C) is the hypersurface
where ƒi are the partial derivatives.
The intersection of C and Pa(C) is the set of points p such that the tangent at p to C meets a.
英汉双解词典包含3607232条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。