This is a cylindrical fuse. When the circuit fails or is abnormal, the current continues to rise, and the increased current may damage some important components in the circuit, or may burn the circuit or even cause a fire. If the fuse is correctly placed in the circuit, the fuse will cut off the current by itself when the current abnormally rises to a certain height and heat, thus protecting the safe operation of the circuit.
http://www.wzcfdq.com/cylindri....cal-fuses/cylindrica

And if sensor magnets are installed on mines or mines, since tanks or warships are made of steel, when they are close (without touching the target), the sensors can detect changes in the magnetic field and cause the mines or mines to explode, increasing the lethality.
http://www.neodymiummag.com/ne....odymium-magnets/sens

Maintaining mental health becomes essential when it comes to healthy work-life balance. Innovative research in 2005 proved a decline in anxiety levels when people colored mandalas. The benefits of Paint by Numbers for adults are: 1) Reduce Anxiety and Stress Level: Paintings make adults feel happier, calmer and more relaxed.
http://www.kshomediy.com/paint....-by-numbers/paint-by

The multi-functional mechanical vibration analyzer is a basic instrument for the factory to carry out condition monitoring and realize predictive maintenance. It is a powerful tool for equipment reliability management and TPM. Its simple operation is suitable for equipment maintenance and inspection personnel, as well as production operators, for measuring, recording and tracking machine status, detecting abnormalities, and enabling diagnosis and trend monitoring of common machine vibration failures.
http://www.kmvibrationanalyzer.....com/vibration-analy

Traditionally gift boxes used for promotional and seasonal gifts are made from sturdy paperboard or corrugated fiberboard. These boxes normally consist of a base and detachable lid and are made by using a die cutting process to cut the board.
http://www.ipackagingbox.com/paper-box/gift-box/