期望均方 [统计] expected mean square

人均期望寿命 the average life expectancy

期望均衡 expected equilibrium

朔望平均低潮位 mean monthly-lowest water level

期望平均数 expected mean

期望平均准则 expected average criterion

期望平均命中点 Desired Mean Point of Impact

几何平均期望 geometric average expectation

平均期望寿命 Average Life Expectancy

平均声望等级 [统计] average prestige score