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excavator是什么意思，excavator翻译
excavator
An excavator is a large machine used for digging and moving materials. It is commonly used in construction, mining, and other industries. Excavators have a variety of attachments that can be used for different tasks, such as digging, lifting, and grading.
There are two main types of excavators: tracked and wheeled. Tracked excavators have treads like a tank, which allow them to move over rough terrain and through mud. Wheeled excavators have wheels and are better suited for smooth surfaces and paved roads.
Excavators are powered by diesel engines and can weigh anywhere from 1 to 40 tons. The operator controls the machine using a joystick, which moves the arm and bucket. The arm can be extended or retracted, and the bucket can be filled and emptied by moving the arm up and down.
Excavators are used in a variety of industries, including construction, mining, and forestry. In construction, they are used for digging foundations, grading land, and installing utilities. In mining, they are used for digging trenches and removing overburden. In forestry, they are used for clearing land and removing trees.
Excavators are an essential tool for any construction or mining project. They can help to efficiently move materials and dig trenches, which can save time and money. With the variety of attachments available, excavators can be customized for a wide range of tasks.
However, excavators can also have a negative impact on the environment. They can disturb natural habitats and disrupt the ecosystem. Additionally, they can create noise and air pollution. It is important for operators to be aware of these potential impacts and to take steps to minimize them, such as using noise