This "small solar lamp" is a commercial work of art developed by Berlin-Denmark Icelandic artist Olafur Eliasson and engineer Frederik Ottesen. This yellow "little sun" has a diameter of 12 cm and a weight of 120 grams. It only needs to be placed in the sun f
Through the unified construction of video surveillance networking platforms, it is helpful to end defects and disadvantages such as discretization of video surveillance system construction due to lack of unified planning, lack of unified technical standards, limited capacity for platform a
Hot and humid weather in summer can easily lead to home appliance failure, which will bring inconvenience to consumers' comfort. Recently, the color TV screen of Mr. Li, a consumer in Shandong Province, suddenly turned over, and the characters in the TV all head down. Mr. Li thought that
Safety seal (1) The backup seal is in which the main seal is working and the sub-sealing is in the standby state. There are non-contact temporary seals and contact wear seals in the spare seal. When the former is in the main seal operation, the spare seal is temporarily placed, which is a non-con
Bathtubs used for a long time tend to show signs of decay, stains, and roughening. At this time, in order to reduce expenses, in order to avoid buying expensive bathtubs again, some engineering companies may be invited to perform bath refurbishment. Once the bathtub has been refurbished, with a bea
According to customs statistics, in the first quarter of this year, China's machinery industry import and export totaled 135.076 billion US dollars, an increase of 39.6%. Among them, imports were 66.508 billion US dollars, up 47.01% year-on-year; exports were 68.568 billion US dollars, up 33.
Due to the low temperature in winter, the air is dry and there are many wind and sand. The paint we use is composed of many kinds of chemical materials. Under the low temperature condition in winter, the properties of chemical materials will change, which will cause some influence on paint constru