笔者从社会语言学角度探讨了社会与语言之间的“共变”关系。

This paper discusses the relations of "co-variation" between society and language from sociolinguistics.

youdao

在发现铅是导致电镀锌钢板黑变发生的关键因素的基础上，对电镀锌钢板的黑变机理提出了锌铅共沉积假说和硫酸铅胶体膜假说；

On the basis of finding that lead is the vital factor to bring patina on galvanized steel sheets, two hypothesizes, colloid film of lead sulfate and the codeposition of zinc and lead, were employed.

youdao

进一步增加调制周期，两调制层之间产生非共格界面，破坏了薄膜中的交变应力场，薄膜的硬度和弹性模量也随之降低。

Further increasing modulation period leads to the emerge of incoherent interface and the destroy of alternating stress field, accompanied by the decreased mechanical properties.

youdao

.. The more they covary--they move together-- the less they cancel out.

共变的趋向越大。。。它们一同增减-,风险越不会抵消。

耶鲁公开课 - 金融市场课程节选