Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW. Terminology, requirements, test methods and marking
Secondary cells and batteries containing alkaline or other non-acid electrolytes. Portable sealed rechargeable single cells. Part 2. Nickel-metal hydride
Optics and photonics. Optical parts with aspherical surfaces. Control method of aspherical surfaces using on-axis computer-generated hologram optical elements
