
Airport navigation lighting circuit buried cable products enhance the stability of the conductor during insulation extrusion, so that the degree of insulation eccentricity control in 11%, compared to the rated voltage of 35kV and below the medium voltage cable eccentricity increased by 4%. 20 °C insulation resistance of 2 × 105MΩ / km, improved cable reliability, low temperature performance, weather resistance, crack resistance, can extend the cable life.
Optical fiber composite low-voltage insulated power cable integrates optical fiber signals and power transmission and distribution cables, and completes optical fiber access while laying cables to solve problems of optical fiber information and communication, avoid secondary wiring, and effectively reduce construction and network construction costs. . The products are inspected by the National Wire and Cable Quality Supervision and Inspection Center (Shanghai) and meet the requirements of the relevant national standards. Their main performance indicators are superior to the relevant national and industry standards.
The pre-branch cable adopts a series of special molds, special production equipment and special production lines. It is suitable for high-rise buildings, which can reduce the cost of construction projects. It also has lower requirements on the environment, and greatly reduces branch hair heat, reducing power consumption. There is a good environmental protection and energy saving effect.
Compared with the traditional silicon rubber cable production technology, the new fire-resistant ceramic silicon rubber insulated cable product solves the phenomenon of “spraying†on the surface, improves the mechanical physical properties of the cable, and improves the fire resistance and low-temperature resistance performance of the cable. Highly concentrated areas and chemical companies can increase the time for the cable to keep the circuit running in the event of a fire, and strive for the most precious time for rescue work, reducing the number of casualties and property losses.
Bitcoin mining machines are one way to obtain bitcoins. Bitcoin is an online virtual currency created by open-source peer-to-peer software. Instead of being issued by a specific currency institution, and produced by the massive computation of a specific algorithm, the Bitcoin economy uses a distributed database of nodes throughout the P2P network to identify and record all transactions. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin by producing a large number of coins.
Any computer can become a mining machine, but the returns will be low, and it may not mine a single bitcoin in a decade. Many companies have developed specialized Bitcoin mining machines with special mining chips that are tens or hundreds of times faster than normal computers.
Currency system by the user (the user through the key control wallet), trade (trade will be broadcast to the whole currency network) and miners (generated by competition calculation agreed on each node of the chain block, block chain is a distributed public authority books, contains the currency network of all the transactions happened)
Bitcoin miners manage the Bitcoin network by solving the problem of proof-of-work mechanisms with a certain amount of work -- confirming transactions and preventing double payments. Because hashing is irreversible, finding the number of random adjustments required to match is difficult, requiring a trial-and-error process that can predict the total number of times. This is where the proof-of-work mechanism comes into play. When a node finds a solution that matches the requirement, it can broadcast its result to the whole network. Other nodes can then receive the newly solved data block and check whether it matches the rule. If the other nodes calculate the hash value and find that the requirement (the operation goal required by Bitcoin) is satisfied, then the data block is valid and the other nodes accept the data block.
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