cumulative frequency distribution meaning in English

累积次数分配
累积频数分布
累积频数分配
频率累积分布

A cumulative frequency distribution enables us to see how many observations lie above or below certain values .
累计频率分布反映在某个值以下，或在某个值以上有多少个观察值。
The purpose of this web site is to share my experiences with workers in any country on water logging in agricultural lands , irrigation induced soil salinity , subsurface drainage for agriculture ( horizontal and vertical ) , reuse of groundwater , ground - water hydraulics , ( geo ) hydrology , rainfall and surface runoff relations , reclamation and improvement of water logged saline , salty , sodic alkaline , and acid sulphate soils , plant growth , crop production and responses as well as statistical analysis consisting of segmented linear regression and cumulative frequency distributions
描述:探讨农业耕地的水涝问题；灌溉导致的土壤盐碱化；地表灌溉；地下水的再利用；地下水水力学；雨水与水流失的关系；浅地表排水；土壤开垦及水涝，酸性，碱性土壤的改良；片段线形回归和累积频数分布的统计分析等。