资讯

Skip to content viewer section. Existing studies of the structural strength of longwall mining hydraulic support are mainly focused on the force acting on individual supports instead of the general ...
A team of physicists at ETH Zürich has built the first-ever working mechanical qubit ... the goal has still not been fully ...
Above: A fully mechanical design to help maintain the cleanliness of a HLS umbilical fluid transfer system during lunar operations. Lunar dust was the greatest operational challenge to the astronauts ...