求翻译：作为工程车辆，例如自卸矿车，每天的工作环境是矿区，环境极其复杂多变，负载经常在最大值与最小值间剧烈波动，还会引起频繁换挡等问题，是什么意思？

As a construction vehicle, such as dump mine car, the daily work environment is mining, the environment is extremely complex, often the load between the maximum and minimum volatility, can also cause frequent shifting and other issues,

As engineering vehicles, such as tubs Action every day since the working environment is extremely complex and ever-changing environment, mining areas, often in the maximum load with sharp fluctuations among the smallest value, it will also cause problems such as frequent-for-block.

As the project vehicles, for example the self-discharging mine car, the daily working conditions are the mining area, the environment are extremely complex changeable, load frequently in maximum value and minimum value fierce undulation, but also can cause shifts gears frequently and so on the quest

As construction vehicles, such as the mine cars, dump, daily work environment is a mining area, extremely complex and ever-changing environment, load often fluctuate between the maximum and minimum values, also cause frequent problems such as shifting,

As construction vehicles, such as the mine cars, dump, daily work environment is a mining area, extremely complex and ever-changing environment, load often fluctuate between the maximum and minimum values, also cause frequent problems such as shifting,