Recently, according to the Japan Kyodo News Agency, “The Japanese car manufacturer Subaru announced on the 27th the investigation report on the change of the fuel efficiency and exhaust gas inspection data of new cars. The 903 cars of its 9 types of vehicles were confirmed to have data tampe-----
(1) Size and arrangement of grouting pipe: 1. Grouting pipe use specification: Φ20×3000 grouting pipe for over-excavation over 500mm, over-excavation less than 500mm and Φ20×2500 grouting pipe for bottom plate, grouting pipe row spacing is 2m×2m, error ±100mm, exposed length 10-----
At present, the US-sponsored sword refers to the "Made in China 2025" trade war continues to ferment, "ZTE event" caused a strong shock in the industry. Recently, the United States seems to point to the global communications equipment giant Huawei, once again touched the pain of-----
When Jiabu La atmosphere of thiourea and a comparative test method was done, the two methods is treated with carbon-containing gold concentrate pyrite arsenic 500g, at 25 ℃, liquid to solid ratio of 2, using air as the oxidant (1L /min) and each of its optimal leaching parameters: thiourea me-----
Fan chute Term: Sector chute English: pinched sluice Interpretation: Also known as a sharp chute. The width of the trough is linearly contracted from the feeding end to the discharging end, and the discharge port is fan-shaped, so it is called. The inclination of the tank is 16°-20°. During-----
General rules for mine gas inspection (1) Establish a strict system for checking gas by patrol inspection chart. (2) The mine chief, the mine technician, the blaster, the captain of the mining area, the captain of the ventilation zone, the engineering and technical personnel, the squad leader, and-----
Lead is a blue-gray metal, new fracture has a brilliant metallic luster. The solid density is 11.35 g/cm3, the melting point is 327.4 degrees Celsius, the boiling point is 1525 degrees Celsius, pure lead is the softest in metal, and the Mohs hardness is 1.5. Lead has good malleability, but its ducti-----