Original title: Geological down-the-hole drill Down-the-hole drill Portable down-the-hole drill is a new type of energy-saving and efficient rock drilling equipment, which is widely used in medium and small mines, road construction, national defense, mining dth bit , water conservancy and rock engineering. It is also an essential rock drilling equipment for open-pit mining, especially for...

Original title: Precise drilling technology is the first thing to learn in woodworking technology. Introduction to woodworking drilling tools Precise drilling techniques are the first thing to learn in woodworking. Modern technology has made it easy to do. The traditional drill is a twist drill. The drilled sawdust can be carried out of the hole by the drill bit. Holes can also be made by the...

Original title: "Go to the world and the sea", creating many firsts! Directly Hit Many "Super Projects" in Shenzhen, the Fastest Opening Next Year When people mention Shenzhen, "Shenzhen speed" is one of the most frequently used words. It was originally derived from The Amazing Efficiency of Shenzhen Special Economic Zone in the Early Stage of Construction Record of "One Floor in Three Days" of...

Original Title: Finding Water and Drilling Wells for Poverty Alleviation in Southern Jiangxi: Case Analysis and Process Record (Part II) Part 1 Indoor comprehensive research and judgment, accurate well determination in the field Click to Read: Gannan Poverty Alleviation Water Search and Well Drilling: Case Analysis, Process Record (Part I) Part 2 Fast drilling verification and intelligent water...

Original title: Structures and principles of 27 reactors (with pictures and texts), all you want to know is here. Introduction Chemical reactor is the core equipment of chemical production, and its advanced technology has an important impact on chemical production, which directly affects the investment scale and production cost of the device. It is also the heart of the chemical production...

Original title: Structures and principles of 27 reactors (with pictures and texts), all you want to know is here. Introduction Chemical reactor is the core equipment of chemical production, and its advanced technology has an important impact on chemical production, which directly affects the investment scale and production cost of the device. It is also the heart of the chemical production...

Original title: Structures and principles of 27 reactors (with pictures and texts), all you want to know is here. Introduction Chemical reactor is the core equipment of chemical production, and its advanced technology has an important impact on chemical production, which directly affects the investment scale and production cost of the device. It is also the heart of the chemical production...

Original Title: Good Helper for Railway Coal Transportation in Northern China in Winter-Anti-freezing Dust Suppressant Antifreezing dust suppressant is an antifreezing dust suppressant specially developed for railway coal transportation in northern China in winter. The dust suppressant well combines the dust suppression function and the anti-freezing function together, so that the dust...

Original Title: Principles of Solar Distiller-2017 New Curriculum Standard Reading Comprehension D Content Principles of Solar Distiller-2017 New Curriculum Standard College Entrance Examination English Volume I Reading Comprehension D Content D Expand the full text A build-it-yourself solar still is one of the best ways to obtain drinking water in areas where the liquid is not readily...

Original Title: "The World's Most Rich University", Membrane Separation Releases "Nature"! Published 3 Science/Nature articles in 20 days! One Research background Natural gas accounts for at least a quarter of the world's energy supply, a share that is expected to overtake coal around 2032. This growth poses a challenge to conventional natural gas purification technologies because natural gas...