firefighting equipment
Sahifa ko'rinishi (5 sahifa)
Pastga aylantiring 👇
Ko'proq o'qimoqchimisiz?
Barcha 5 sahifani Telegram orqali bepul yuklab oling.
To'liq faylni yuklab olish"firefighting equipment" haqida
firefighting equipment is a special technical equipment used to protect people, buildings and natural resources from fire: fire trucks, trains, ships, airplanes and helicopters, fire extinguishing equipment. fire alarm devices, fire extinguishers, fire hydrants and other fire extinguishing equipment also belong to firefighting equipment. the history of attempts to create firefighting equipment dates back to very ancient times. in bc, the greek mechanic-inventor ctesibius designed a machine that could "throw water up", but it was not widely used in practice. by the 16th century, the german inventor anton platner created a lever fire pump that could deliver a water flow of up to 6–8 m. after the invention of the steam engine (1829), a fire extinguishing device was created in …
Bu fayl DOCX formatida 5 sahifadan iborat (6,6 MB). "firefighting equipment"ni yuklab olish uchun chap tomondagi Telegram tugmasini bosing.