parent channel是什么意思

用法例句

Small electric network remarking of Shulu parent channel;

舒庐干渠小水电电网及其改造

Study on ecological restoration allocation along Jiping Canal of East Route of South-to-North Water Transfer Project;

南水北调东线济平干渠工程沿线生态修复配置模式研究

Research of Gao-gan Canal Pollution and Health Condition of Yangling Dwellers;

高干渠污染与杨陵居民健康状况调查研究

The distribution feature of sandy soil and cohesive soil was found out for the main at Tianjin canal of middle route from south to north water transfer project,by using diversified methods of geophysical exploration,for instance,electrical sounding and seismic reflection method and ground penetrating radar.

采用电测深法、地震反射波法、地质雷达技术对天津干渠地层岩性进行探测 ,基本查明了沿线砂性土与粘性土 (大层 )的分布特征 ,满足了任务要求 ,取得了较好的地质效

By research on the freezing expansion proof of the concrete lining in the main canal (Hebei section) of the South-to-North Water Diversion Project, some regulations governing the freezing expansion ratio for the soil in the seasonal freezing areas have been found.

南水北调中线工程总干渠(河北段)混凝土衬砌防冻胀技术研究,发现了适合于浅层季节冻土区的冻结冻胀规律,建立了以工程地点水文地质条件和邻近气象台站气温资料为计算依据的冻深、冻胀量计算经验公式及三种保温层厚度计算方法,依据不同渠道混凝土衬砌结构的防冻胀效果,提出以允许不均匀变位系数和允许法向位移量作为渠道衬砌抗冻胀稳定性的要求条件以及典型衬砌结构的允许不均匀变位系数。

To optimize water head allocation of main canal is important for saving investment and reasonably designing Structures.

南水北调中线总干渠渠道线路长,建筑物数量大、类型多,进行水头优化分配对于节省工程投资,合理的进行总干渠工程布置有着重要的意义。

,the heightening of Danjiangkou dam, the extension works of Taocha Sluice,the Zhanghe Aqueduct on the main canal, etc.

阐述了南水北调中线工程主要输水建筑物多年来进行的水力学试验成果,其项目有:水源工程丹江口大坝加高,引水枢纽陶岔渠首水闸扩建工程,输水总干渠的漳河渡槽等6项。