The daily mean variation maps show that a pronounced anomalous phenomenon existed on the curves of fluid compositions in mud of the CCSD main hole before and after the earthquakes.

从日均值图上看，地震前后中国大陆科学钻探主孔流体测值曲线存在明显的异常现象。

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National pay scales with limited regional variation mean that teachers and nurses are under-paid in London and the south-east, leading to severe labour shortages.

ECONOMIST: Labour and the unions

They take last year's budgets and results and assume some modest variation from the mean.

FORBES: Magazine Article