A symmetrical cable A communication circuit is composed of two symmetrically arranged wires. There are two types of high frequency and low frequency. The former has a maximum transmission frequency of up to 800 kHz, which corresponds to the opening of 180 telephones in a loop; the latter's ma
Many families choose to use mosaics to decorate their kitchens or bathrooms when they are decorating. Mosaics and other building materials The biggest difference between ceramics, tiles, and glass is that mosaics have a small unit area, a wide range of colors, and an unlimited number of combinatio
The Ministry of Finance recently issued the “Circular on Organizing and Implementing the 2012 Solar Photovoltaic Building Application Demonstration†to notify the relevant matters of the application for the 2012 Solar Photovoltaic Building Application Demonstration Project. The
The next few years will be a crucial period for the construction of smart grids. Smart grids and complete sets of equipment, intelligent power distribution and control systems will usher in the golden period. To be smart, we must first realize intelligent appliances. Intelligentization is the fut
A pair of rubber shoes, a pair of casual shoes, a pair of safety shoes, and three pairs of shoes have achieved three "national gold business cards" in Ruian City - the famous city of Chinese rubber shoes, the famous city of Chinese casual shoes and the famous city of Chinese safety shoes,
Are you reluctant to repeat the repertoire? The lengthy advertising bombing has already made you intolerable? Every night, "TV time" is still so boring? In fact, you don't have to grieve yourself. Now the word "smart" has long been exclusive not only for mobile phone
Chilled water is a circulating water that flows to the cooling process only after its temperature has dropped through the refrigerator, and is mainly used in systems requiring low-temperature cooling in central air conditioners and factories. The composition of the cooling system, the frozen water i
Putting some plants in the kitchen not only purifies the air, but also improves the mood of the chefs, so that you can make good dishes. You can also encourage the kitchen feng shui to increase your fortune. Here are some feng shui knowledge about the plants in the kitchen. The kitchen is loc
Abstract My exploration personnel recently drilled a deep high-yield shale gas pre-exploration well in the northern part of Guizhou, Ding Page 2HF. It is the deepest shale gas horizontal well buried in China and has achieved a major breakthrough in deep shale gas exploration in China. Tested,
 At present, the uneven situation in the furniture market is still relatively serious. Some furniture manufacturers have done a good job in pre-sale "kung fu". They claim to be famous brand products, green environmentally friendly furniture, and life-long services. However, when consu
There are a lot of creative tableware that we can see in peacetime, but it is still very rare to integrate the eco-friendly concept into the design of tableware. Environmentally-friendly tableware is not necessarily a return to the traditional wooden bowl of porcelain plates. From the us
Aluminum and aluminum alloy plating is more difficult, because aluminum has a strong affinity for oxygen, the surface is easily oxidized; aluminum is amphoteric metal, is not stable in acid, alkali; aluminum potential is very negative, easy to be immersed in the plating solution Erosion and displa