mean level

基本解釋

The mean level of serum calcium, phosphorus and calcium-phosphorus product changed slightly in the following 8 months.
平均血鈣、血磷、血鈣磷乘積值在后8個(gè)月中均保持穩(wěn)定。
Recently it was found that the nuclear symmetry energy can be directly associated with the mean level density and an iso-vector potential.
最新研究發(fā)現(xiàn)原子核對(duì)稱(chēng)能與平均的能級(jí)密度和同位旋矢量勢(shì)直接相關(guān)。
Table 2 describes the mean level of happiness in the USA in approximately every year between 1972 and 2008 (the most recent year for which data are available).
表2描述了從1972至2008年（最近一年的數(shù)據(jù)）間大約每年美國(guó)幸福的平均水平。

Still,this would only mean that there are community-level outbreaks in at least one other country in a different area of the world.
And the answer is that-- yes it won't make a difference to our wellbeing but it also doesn't mean that we cannot increase our level of wellbeing.
答案是-,是的，它不會(huì)改變我們的幸福水平,但并不意味著,我們不能提升自己的幸福水平。
哈佛公開(kāi)課 - 幸福課課程節(jié)選

Mean sea level: average height of the sea surface over a 19-year period.
UNESCO: L O S S A R Y
The idea here is to communicate that ultimate goal of economic production is to raise folks standard of living, by which we mean their level of consumption.
FORBES: How to Grow an Economy