用一台输出功率约2千瓦的横向流动CO_2激光器对碳钢、铸铁进行表面热处理。
We have used a transversely-excited flowing CO2 laser with the output power of about 2kw for heat-treatment of the surface of carbon-steel.
这是第一台能够追踪钠离子流动，因而得以即时观察到个别脑细胞触发的仪器。
The machine is the first to be able to follow the flow of sodium, allowing it to see the firing of individual brain cells instantaneously.
本文从采场风流流动及瓦斯运移数学模型导出模型实验的相似准则，指导实验台设计。
Based on a mathematical model of air flow and gas migration in working face, the similitude criteria for model test has been deduced, on which the test bench design depends.
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