求翻译：针对这些问题，目前四川大学、合肥工业大学、贵州大学、河北科技大学和贵州东华工程股份有限公司等多家单位[16-24]围绕磷石膏制硫酸铵技术进行了多方面的开发和研究工作，是什么意思？

To solve these problems, Sichuan University, Hefei University of Technology, University of Guizhou, Hebei University of Science and Technology and Guizhou Tung Wah Engineering Co., Ltd. and a number of units [16-24] around phosphogypsum ammonium sulfate technology carried out many development and re

In response to these issues, the current 4, Sichuan university, Hefei University of Science and the Guizhou University, Hebei University of Science and Technology and Guizhou province east China Engineering Company Limited, and many family units [ 16- 24] around sulfuric acid ammonium phosphate gyps

正在翻译，请等待...

To address these issues, current Sichuan University, Hefei University of technology, Hebei University of science and technology in Guizhou, Guizhou University, Donghua engineering company limited and a number of units [16-24] around the phosphogypsum ammonium sulfate technology for a wide range of r

正在翻译，请等待...