In the first years of the Qing Dynasty, the dispute of ceremony and propriety had worsen the military conflict of Sino-Russia in the Heilongjiang river valley like snow plus frost.
清初中俄两国在黑龙江流域的军事冲突因礼仪之争不但未能缓解，反而雪上加霜。
The feature of earthquake activity is studied by using the basic methods based on earthquake activity study in Heilongjiang river valley and its neighboring regions.
应用地震活动性研究的基本方法对黑龙江河谷及邻近地区的地震活动特征进行了研究。
Objective to study the species distribution on mosquitoes, midges and horse flies of important blood-sucking diptera insect in Heilongjiang river valley.
目的调查黑龙江流域重要吸血双翅目昆虫蚊、蠓、虻的种类分布。
应用推荐