As an important natural resources and social factor of production, land has been considered as the foundation and activity base of human life since ancient times.
土地自古以来就是人类的衣食之源，同时它作为重要的自然资源和社会生产要素，也是人类生产和生活不可或缺的活动基地。
The productive capacity is usually expressed in terms of an activity base, such as machine hours, direct labor cost, or direct labor hours.
标准生产能力通常表达为机器工时、直接人工成本、直接人工工时等指标。
The productive capacity is usually expressed in terms of an activity base, such as machine hours, direct labor cost, or direct labor hours.
标准生产能力通常表达为机器工时、直接人工成本、直接人工工时等指标。
应用推荐