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A proportional control system is a type of linear feedback control system. Two classic mechanical examples are the toilet bowl float proportioning valve and the fly-ball governor. The proportional control system is more complex than an on-off control system like a thermostat, but simpler than a proportional-integral-derivative (PID) control system used in something like an […]

History Soloflex, Inc. was established in 1978 by Jerry Wilson. The idea behind the weight straps came from Jerry’s days flying small airplanes. The resistance on the plane’s controls came from the bungee cord. Jerry used this idea to create the Weightstraps that provide enough resistance to equal large amounts of free weight. In 1980, […]

States SARFT Broadcasting President Ma Ju Institute of Science One, needs analysis First talk about the basic situation, the national TV ownership in more than 500 million units, Cable television 150 million net users, 47 million digital subscribers, so of cable television Digital Is very important. For the development of cable networks have a lot […]

Sounds In most implementations, a digital piano produces a variety of piano timbres and usually other sounds as well. For example, a digital piano may have settings for a concert grand piano, an upright piano, a tack piano, and various electric pianos such as the Fender Rhodes and Wurlitzer. Some digital pianos incorporate other basic […]

Since late last year by the international financial crisis, China's textile industry experienced unprecedented difficulties. However, heavy losses, the textile exports have been steadily recovering, experts pointed out that textile exports in 2010, recovering. In response to the financial crisis, China for 4 times increased the export tax rebate rate of textiles and apparel. HC […]