求翻译：近年来，随着中国经济的持续、快速发展，市场化进程的逐步推进，包括直升机在内的通用航空市场结构发生了较大的变化。以前，通用航空市场的主要服务对象为政府部门或国有企业，作业价格依靠政府制定的作业收费标准执行，作业费用由财政支付。经营项目包括：航空摄影、航空探矿、人工降水、航空护林、飞机灭蝗、农林化飞行等。是什么意思？

In recent years, as China's economy sustained rapid growth, the market step by step process, including helicopters, general aviation market structure, including major changes have taken place. Previously, the general aviation market, the main target for government departments or state-owned enterpri

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In recent years, along with the Chinese economy continually, the fast development, the marketability advancement gradually advancement, has had the big change including the helicopter general utility aviation market mechanism.Before, the general utility aviation market main service object for the go

In recent years, with China's sustained, rapid economic development, step by step process of marketization, including General Aviation, helicopter market structure has undergone major changes. Yiqian, main service target groups of the general aviation market as a Government Department or State-owned

In recent years, with the continual and fast development of China's economy, gradual promotion of the market-based process, the structure of market of common aviation including helicopter has changed greaterly. In the past, the main serivce object of the market of common aviation was a government de