在京城北环水系治理中,打通的转河是长河高梁桥以东连接护城河的一段河道。历史上,长河水出高梁桥直入积水潭,并没有转河。转河是修建京张铁路时开挖的一条河道。 北京城旧有封建帝都的传统格局,随着近代工商业和 Beijuan in the capital of the river system, opened up to the river is the Yangtze River girder bridge east of the moat connecting a section of the river. Historically, the long river water out of sorghum bridge straight into the stagnant water, and did not turn the river. Turn River is the construction of Jing Zhang railway excavation of a river. Beijing City, the old feudal imperial capital of the traditional pattern, with the modern business and industry