Terms for subject Ecology containing smallest

English	Chinese
comprehensive management of small catchment	小流域综合管理
developing type of a large reservoir combined with a small one	大、 小库开发方式
environmental systems on small islands	小岛屿环境系统
small catchment	小流域 (watershed)
small concentration	低浓度
small-diameter lumber	小径木
small drain	水沟
small drain	水坑
small mammal	小型哺乳类
small or medium sized purifying installation of domestic sewage	中小型生活污水净化装置
small rainfall	小雨资源
small watershed model	小流域模型
small watershed technique	小集水区试验方法