等级分布 meaning in Chinese

ranked distribution

Beaches on the outlying islands : breakdown of grading results during the 2005 bathing season
离岛区的泳滩:二零零五年泳季期间的等级分布
Tsuen wan and tuen mun beaches : breakdown of grading results during the 2005 bathing season
荃湾及屯门区的泳滩:二零零五年泳季期间的等级分布
Objective both area clustering appeared in cholera and it s ranks of distribation were explored from the distribution chart of accumulative incidence rate
目的从广西霍乱累计发病率分布图上探讨该病在地理分布上有否聚集性以及聚集性的等级分布如何。
Finally , on the basis of available water supply analytical equilibrium analysis analyzed water and soil equilibrium about yeerqiang river of 2010 、 2020 years , incorporated plantation suitability scale distribution and quantity in support to establish exploitation scale for the future according to the principle which take the water to determine plantation in the end , produced safeguard mechanism to exploit rationally and utilize plantation resources in support
最后,在叶尔羌河2010年、 2020年可供水量分析的基础上进行了水土平衡分析,依据后备耕地适宜性等级分布及数量,按以水定地的原则确定了叶尔羌河流域后备耕地在今后的开发规模。提出了合理开发利用后备耕地资源的保障措施。