Oxygen bottles and acetylene bottles should be kept at a distance of 10 meters from the hot spot during construction work. The distance between the oxygen bottle and the acetylene bottle should be kept at 5 meters or more. The length of the primary wire (ground wire) of the welding machine should be

(1) Low temperature engineering application of helium gasIt is well known that the liquid temperature range of xenon is 2 x 10-3 - 5.20 K, the liquid temperature range of hydrogen is 14.2 - 33.0 K, and the liquid temperature range of helium is 24.5 - 44.40 K.Because helium is chemically inert and ha

Oxygen is our basic survival conditions, no oxygen, we cannot survive, we can see some patients in the hospital is needed medical oxygen tanks, because these patients only by providing oxygen, oxygen tank to breathe normally, so for the oxygen tank storage have strict requirements. So what are the a

Generally, a substance that is in a gaseous state at normal temperature and pressure is called a gas. A wide variety of gases, classified by nature, can be divided into inorganic gases and organic gases; according to ancient classification, can be divided into constant gas and trace gases, classifie