American scientists developed photovoltaic windows

About solar cell applications in the construction of the discussion, has several decades of history, the most people are concerned about the thin-film solar cells. However, some scientists find another way to find the answer directly from the window itself. According to technology media Phys, a t

Analysis of natural gas compressors

The rig uses modern automatic drilling control and advanced offshore drilling technology. Including the single-seat driller cabin, the driller sits in the air-conditioned room through the programming logic circuit, the screen and the joystick remote control winch, turntable, drilling pump and thy