Based on the die-less multi-mode optical fiber technology, different modes in the fiber core are used as independent transmission channels. Combined with DWDM technology and polarization multiplexing technology, the SMF can break the capacity of single-mode optical fiber communication syst.......

Globe valve, also known as the cut-off valve, is a forced-sealed valve, so the valve is closed, the pressure must be applied to the valve flap to force the sealing surface does not leak. When the medium from below the valve into the valve, the operating force needed to overcome the resista.......

(1) sealing friction deputy face serious wear and tear. Due to the viscosity of residual oil, poor fluidity, and the residue medium contains granular and powdered cokes, there is inevitably coke around the friction pair, which is quite damaging to the friction pair. Once the coking materia.......

We all know that the dream of Beijing liquid metal circuit printer it. Liquid metal 3D printing broke the technical bottlenecks and barriers of personal electronic manufacturing, to a certain extent, to achieve the direct manufacture of electronic hardware. Flexible circuit that can bend a.......

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Three-wheel suction trucks belong to an environmentally-friendly tool vehicle type in our daily life. The main working environment of the three-wheel suction truck is in the pool of septic tanks. Moreover, the three-wheel s.......

An armored command vehicle is a type of military vehicle that is commonly used in combat operations. There are mainly two modes. One is tracked, and the other is wheeled. No matter which k.......

In agricultural irrigation, actually using soil water potential to control irrigation is more scientific and more reasonable than using soil moisture to control irrigation. This is because water content does not directly reflect the degree of drought in soil, and the only indicat.......