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- agricultural ditch systems 排水渠系
- Analysis of process performance for triple oxidation ditch system treating municipal wastewater. 三沟式氧化沟污水处理工艺的性能分析。
- Quantifying the Influence of the agricultural ditch on the wetland landscape should provide useful information for effectively monitoring, assessing, and managing watershed wetland. 其次，排水渠密度直接影响湿地景观多样性，说明排水渠密度的增加是导致湿景观多样性减少的重要原因。
- Oxic zone and anaerobic zone were not set up separately in interchannel clarifier oxidation ditch system, gathering all the functions of the aeration, sediment and circumfluence in it. 此一体化氧化沟不分设好氧区和厌氧区，集曝气、沉淀、回流功能为一体，符合当前污水处理工艺合建、简化发展的总趋势。
- multi-stage canal and ditch systems 多级沟渠系统
- The oxidation ditch system in Handan waste watertreatment plant (WWTP) is the first triple oxidation ditch system (T-OD) treating municipal wastewater in China, which was studied in this paper. 以三沟式氧化沟为对象，在现场试验的基础上，分析了环境因素和工艺参数(包括水温、水力停留时间、污泥龄)与运行方式对三沟式氧化沟去除有机物、脱氮、除磷效果的影响。
- He died in the last ditch in a fierce battle. 他在一次激战中奋战而死。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The car ran off the road into a ditch. 汽车驶离道路跌进沟中。
- He stumbled and took a header into the ditch. 他跌了一跤而栽到沟去了。
- The boy hops the ditch and run down the path. 那男孩跳过沟，沿著小路奔去。
- Keep by this ditch and you'll get there in no time. 沿着这条沟走下去，一会儿就到了。
- That ditch drains water from the swamp. 那条沟于沼泽中的水排出。
- He drove into the ditch completely unaware. 他不知不觉地把车开进了沟里。
- ecological ditch system with interception function 生态拦截型沟渠
- Assembling and Dispersing Ditch System(ADDS) 集散渠道系统
- The horse jumped over the ditch. 马跳过了那条沟。
- That state is classed as an agricultural area. 该州被划为农业区。
- He leaped the horse across the ditch. 他纵马跳过沟渠。
- The two systems are, in effect, identical. 这两种制度实际上一模一样。
