The historical background and development of lids can be traced back to ancient times. With the continuous progress of human civilization, the form and materials of lids have also undergone tremendous changes.
Ancient lids
Ancient lids were mainly built with natural materials, such as branches, leaves, grass, etc. This kind of lid is usually used for temporary residences, such as temporary camps for hunting. Due to the simple materials and simple structure, this kind of lid is not strong and can be easily destroyed by wind and rain.With the progress of human society, people began to use stronger materials to build lids, such as stones and bricks. The structure of this kind of lid is more stable and can be used for long-term residence, but the construction process is very time-consuming and laborious, and it is mainly used in cities and wealthy families.
The evolution of modern lids
Industrial Revolution period: With the advent of the Industrial Revolution, people began to use metal materials such as steel to build lids. The strength and durability of metal materials far exceed those of natural materials and stones. This kind of lid can withstand stronger wind, rain and earthquakes. In addition, steel structures can also achieve larger spans of buildings, making buildings more open and transparent. This kind of lid is very common in modern cities, such as high-rise buildings and bridges.
Modern technology development: In recent years, with the advancement of technology and materials, people have begun to use more advanced materials to build covers. For example, new materials such as glass and carbon fiber have the characteristics of light weight and high strength, which can be used to build more innovative and unique covers. These new materials also have good heat insulation and sound insulation properties, making the covers more environmentally friendly and comfortable. This kind of cover is not only used in the construction field, but also widely used in aerospace, automobile and other fields.