Silicon solar cells achieve 24.1% conversion efficiency

On June 27, 2016, the United States SunPower announced that the conversion efficiency of silicon solar panels reached 24.1% at the R&D level, which exceeded the previous world record. The result of this time is the use of solar cells with an average effi ...more...

Human-accident Accident

News Related Keywords: No tags. The main argument: Social development to today, human-computer intelligence collaboration can not be avoided, human behavior errors are inevitable, only to understand the physical limits of human existence, and try to make up for it, human-computer system accident d ...more...

Oil well operations common fishing tools

News Related Keywords: No tags. In the mid-production process of oil and water well development, the geological factors in the area where the production well is located, the technological level in the early stage of development, engineering design, development funding factors; the level of oil rec ...more...

Rice blast prevention and control method

Rice blast is a devastating disease, and it is mainly used to prevent and control leaf blast and rice blast. 1. Prevention and control of leaf blast: When there are lesions in the field, use 20% tricycloazole wettable powder 100g, spray with 45kg of water; 30% clean emulsifiable concentrate 15ml, ...more...

What is the procedure for using an air respirator?

[ Huaqiang Security Network News ] This article China Security Network Xiaobian introduces the use of air breathing apparatus. First, air breathing apparatus is widely used in fire protection, chemical, shipbuilding, petroleum, smelting, warehouse, laboratory, mining and other ...more...

How to shop for tiles

Tiles are more common decoration materials, because the tiles on the floor will make the visual effects and the use of effects are very good, so more and more families will buy tiles, but the tiles are also need to pay attention, different tiles The effects of the methods are different. Then, the ...more...