【中文版】

主营业务收入是指企业销售商品和提供劳务所得到的收入净额。简单来说，就是企业卖出了多少产品或服务，并且收到的钱减去成本后得到的收益。这个指标是衡量企业经营业绩的重要指标，也是投资者进行投资决策的重要参考。

主营业务收入主要包括销售商品收入和提供劳务收入。销售商品收入是指企业销售自己生产或者采购的商品所获得的收入，比如销售原材料、成品、半成品等。提供劳务收入是指企业提供各种劳务服务所获得的收入，比如安装、维修、运输等。

主营业务收入的计算公式为：主营业务收入=销售量×销售单价。其中，销售量是指企业销售出去的产品或服务的数量，销售单价是指企业销售产品或服务的价格。

主营业务收入是衡量企业经营活动成果的重要指标，它反映了企业的市场占有率和盈利能力。如果企业的主营业务收入持续增长，说明企业的经营状况良好，市场占有率不断提高，同时也意味着企业的盈利能力不断增强。如果企业的主营业务收入下降，说明企业的经营状况不佳，市场占有率下降，同时也意味着企业的盈利能力减弱。因此，投资者应该密切关注企业的主营业务收入变化情况，以便做出正确的投资决策。

【英文版】

What is the main business income? The main business income refers to the net income from the sale of goods and the provision of services by enterprises. In other words, it is the amount of money that enterprises have received after selling products or services, minus the cost. This indicator is an important measure of the operating performance of enterprises and an important reference for investors to make investment decisions.

The main business income mainly includes sales revenue and service revenue. Sales revenue refers to the income obtained by enterprises from selling self-produced or purchased goods, such as selling raw materials, finished products, semi-finished products, etc. Service revenue refers to the income obtained by enterprises from providing various service activities, such as installation, repair, transportation, etc.

The calculation formula of the main business income is: main business income = sales quantity x sales price. Among them, sales quantity refers to the quantity of products or services sold by enterprises, while sales price refers to the price at which enterprises sell their products or services.

The main business income is an important indicator衡量 enterprise operating activities. It reflects the market share and profitability of enterprises. If the main business income of an enterprise continues to grow, it indicates that the enterprise is in good condition, its market share is constantly increasing, and its profitability is also improving. If the main business income of an enterprise decreases, it indicates that the enterprise is in poor condition, its market share is decreasing, and its profitability is weakening. Therefore, investors should pay close attention to changes in the main business income of enterprises in order to make correct investment decisions.