十年前开展的科研院所体制改革,已成功地完成了大部分科研院所的“企业化转型”,这一举措极大地提升了科技成果的产业化水平,提高了转制院所企业的“收益”能力;但,与此同时,
进入21世纪,由于国内外汽车生产行业的迅猛发展,汽车生产量及保有量增加幅度急剧上升,大吨货运车辆及家庭轿车进入生活当中,人们才意识到一个突出的问题,就是车辆的增长与道
The simulation of soil temperature on the Tibetan Plateau(TP) plays a dominant role in the performance of both global climate and numerical weather forecast models. To improve the simulation of soil t
Ultrasonic detection technology is of great significance in the detection and evaluation of physical and mechanical properties of frozen soil, but wave propagation characteristics in frozen soil are u