黑龙江水系是中国最北部的水系。黑色的江水沿着弯曲的河床奔流，矫若游龙，人们就给它起了一个形象的名称——黑龙江。
野鲤的繁殖力很高，因此在黑龙江水系中保持较大的群体数量。
As their higher reproductive capacity, the wild carp keeps a big population in Heilongjiang waters.
以黑龙江水系船舶电站为例，介绍了船舶电站选定的方法和计算步骤。
Taking the case of the Heilongjiang River Shipping Power Plant, it puts forwards the selecting methods and calculating process.
黑龙江水系的航运是东北地区综合交通运输网不可缺少的重要组成部分。
The shipping system of Heilongjiang river is the essential important component of the network of traffic and transportation of the Northeast China.
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