aApproved impoted earth filling under floors well watered and compacted at optimum moisture content 95% of maximum dry density in layers not exceeding 150 mm thick. 批准在层数impoted填装在底井之下的地球被浇灌和变紧密在最宜的湿气含量最大干密度95%不超出150毫米厚实。[translate]...
Another important characteristic ofneutronstars is the presence of very strongmagnetic fields, upward of 1012gauss(Earth’smagnetic field is 0.5 gauss), which causes the surface iron to be polymerized in the form of long chains of iron atoms. The individual atoms become compressed and elongated in...
Such studies have mainly analyzed the driftwood based on a straight flume channel and two-dimensional wood motion, and have actively advanced the numerical modules for driftwood interactions, such as the movement of the riverbed with driftwood deposition, collisions between driftwoods, and water flow ...
At the same time, the solid particles work together to improve the mud cake quality, forming ultra-low-permeability mud cakes in the formation and the plugged surface layer, to meet the requirements of forming ultra-low-permeability plugging layers during the plugging process for the purposes of...
The presence of this ionised layer that surrounds the Earth is so important that, above all, it permits radio transmission across lengths that are longer than the line of sight (for example, from one continent to another), making de facto possible the first ever trans-oceanic radio transmission...