Sina science and technology as long as careful observation, even in his death 2500 years later, you can still identify the footprints of his toe bottom. This is the body of a 14-year-old b…
Over the past decade, the solar water heater industry has developed rapidly, technology has matured. With the continuous appearance of high-rise buildings, ordinary one-piece vacuum tube solar water heater can no longer meet the requirements of solar water heater and building integration. …
The process of a dyno test on a Liebherr engine
The process of a dyno test on a Liebherr engine
The process of a dyno test on a Liebherr engine
General LED lighting in the driver circuit has a current limiting resistor, and resistance of the power consumption and LED light has nothing to do. In order to improve efficiency, it is necessary to use constant-current output switching power supply, and the output stage using p…
With the introduction of the “restricted wage†of financial institutions’ senior executives, it will be logical to call for high-level pay for state-owned companies. A few days ago, it was reported that the regulations governing the remuneration of persons in charge of s…