求翻译：奥地利OSW公司(现为Linz化学公司)和印度 Travancore肥料化学品公司(FACT)等企业曾对磷石膏制硫酸铵作过较深入的研究，并建有工业化装置。是什么意思？

Austria osw (now the linz Chemical Company) and India the travancore fertilizer chemicals (fact) enterprise had phosphogypsum ammonium sulfate for more in-depth studies and built industrial unit.

Austria OSW Corporation (now Linz Chemical Co. , Ltd. ) and the Indian Travancore fertilizer chemicals company (FACT) and phosphate gypsum enterprises have a sulfuric acid ammonium made more in-depth studies, and has an industrialized unit.

Austrian OSW Corporation (presently is Linz chemistry company's) with Indian Travancore enterprises and so on Fertilizer Chemical Company (FACT) once has done the thorough research to the phosphorus gypsum system ammonium sulfate, and constructs the industrialization installment.

Austria OSW company (now known as the Linz chemical company) and India Travancore chemical fertilizer company (FACT) enterprise on more in-depth research into the phosphogypsum ammonium sulfate, and built the industrial devices.

正在翻译，请等待...