HRD noun2 •Abbreviation of hardness on Rockwell scale D. •Initialism of Huanghe River Delta (= Yellow River Delta): a geographic region of China, on the Yellow River/Huanghe, at its delta regions by the Shandong Peninsula, on the Bohai Sea and Yellow Sea, marginal seas of the Pacific Ocean.The Huanghe River Delta (HRD) has rich resources and is being developed on a large[…]On the basis of analyzing the characteristics of environment and resources in the HRD, this[…] — 1996
