航摄像片的基本知识 Basic Knowledge of aerial photos 航摄像片的判读 The Mapping of Relief Map 像片的立体观察 Solid observation of photos 航测资料在水利工程中的应用 Applying data of aerial survey in Irrigation Projects 航测成图的简要过程 The brief process of aerial survey 卫星像片简介 Brief introduction of aerial photos
TEXT A Basic Parts and Types of the Suspensionand Steering Systems Basic Suspension System Components Types Steering System Steering Gear Power Steering
Sectionl Concept of soil tillage and basic manipulation Concept of soil tillage Tillage- The mechanical manipulation of the soil profile for any purpose. Soil tillage-oldest procedure of agriculture to manipulate the soil to improve crop production. Farmers of West Africa preparing their land for planting