Smaller than the oil viscosity of air, temperature, pollution, and thus can be used for high-speed machinery, apparatus and radioactive devices, but its load capacity than the oil is low.
空气比油粘滞性小,耐高温,无污染,因而可用于高速机器、仪器及放射性装置中,但其负荷能力比油低。
2
Some important work worldwide in environmental science, like urban airpollution, discharges of radioactive wastes from nuclear plants, and global climate change were introduced.