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Weather, production is based on the growth of plants, and those plants require an optimum environment for maximum production. However, maximum production is seldom realized in the natural environment because the weather seldom matches the needs of plants. Anytime that the real environment is significantly dAnticlimax 发表于 2025-3-25 07:29:43
Water Runoff,outlet needed for a parking lot or the size of a waterway needed to drain terraces, or to determine the rate of flow through the spillway of a farm pond. In this chapter we will discuss one method that can be used to calculate the rate of runoff.incite 发表于 2025-3-25 13:06:33
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Irrigation,his problem has been irrigation. For effective and efficient use of irrigation one must know its effect on plant production, the best system for a given field and water supply, how much water to apply and when to apply it, and the quality of the water. This chapter will discuss some of these aspectslavish 发表于 2025-3-25 22:28:23
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Equipment Efficiency and Capacity,In this chapter we will be concerned with the efficiency and the capacity of machines. Efficiency is a determination of how well something is done. In referring to machinery, it is an evaluation of how well machines do the tasks that they are designed to perform. Capacity is a measurement of the amount of performance that has occurred.打包 发表于 2025-3-26 12:55:15
Work, Power, Torque, and Horsepower,anisms constructed from them, use three basic units of measure—force, distance, and time. These three units in various combinations and arrangements are the basis of the principles of work, power, and horsepower.遗产 发表于 2025-3-26 19:52:15
Power Trains,s, belts, and chains. These devices are used to deliver power to the individual components of a machine and to change it to meet each component‘s requirement. Changes in speed, direction of rotation, or torque may be needed. This chapter will illustrate some of the principles of power trains and provide examples of how these principles are used.