previous mention meaning in English

前文提及

There was some previous mentioning and review of this ( see for example li zehou
对此，前人虽零散提及，偶有论述，但就二者的渊源关系并未做深入的研究。
As previous mentioned , the complete unicode standard consists of more than the 65000 characters
正如前面提到的，完整的unicode标准由超过65000个字符组成。
The previous mentioned measures will have active consulting value meaning for the administration departments of power construction , owners and contractors of the engineering projects to enhance the engineering risk management in all aspects
对电力建设管理部门、工程项目业主和工程承包商全面加强工程风险管理都具有重要的参考价值。