These are the people who bought black gum root in the past month. 这些是上个月买过黑胶鸡脚的人。
CHEMICAL COMPOSITION OF GUM BLACK WATTLE AND APPLICATIONAL STUDY THEREOF(ⅱ)& Study on Physico chemical Properties of Gum Black Wattle 黑荆胶的化学组成及其应用研究(Ⅱ)&黑荆胶理化性质的研究
The similarity on their physico chemical properties and rheology provides scientific basis for utilizing gum black wattle to replace gum Arabic. 为黑荆胶替代阿拉伯胶提供了科学根据。
The Black Carbon Settles to the Basic Function in the Gum of Vulcanization Effect that Stretch Should Dint 炭黑对硫化胶基本性能定伸应力的影响