canal rudder是什么意思

用法例句

Roles of Canals on the Development of Hangzhou City during the Historical Period;

历史时期运河对杭州城市发展的作用

Research on the History of Beijing Urban Canals and Water Systems;

北京城市运河、水系演变的历史研究

By analysis and evaluation to monitoring data of 8 controls monitoring in two years in the canal in jiaxing,we know the row order of main pollutant and the row order of eath contaminative section in canal;putforward rationalization suggestion on improving water environment in canal.

通过对运河嘉兴段8个控制监测断面二年的监测数据的分析评价,得出该河段中各断面主要污染物的排列顺序及各污染断面的排列顺序,提出了改善运河水环境的合理化建议。

Distribution of heavy metals in the sediments from the Grand Canal (Hangzhou section).;

运河(杭州段)沉积物中重金属分布特征及变化

The Development of the Grand Canal, West Lake and the Hangzhou City in Ming and Qing Dyasty in Foreigners View;

外国人审视中的运河、西湖与明清杭州城市的发展

Effects of dredged from the Grand Canal (Hangzhou Section) on pakchoi were studied using pot experiments.

通过青菜盆栽实验等方法研究了运河 (杭州段 )底泥农田应用对作物的影响。

"When the Great Canal works well,Jining becomes prosperous;When the river transportations is discarded,Jining becomes undeveloped".

"运河通,济宁兴,河运废,济宁衰"阐明了运河与济宁的经济社会生活等方面的关系。