With increase of heat input and laser power density, the cross section of the weld transformed from nail shape to near X shape.
随焊接热输入和激光功率密度的增大，焊缝截面由钉形向近X形转变。
The power supply of high speed electrical machine is high-frequency voltage and the loss of electrical machine density is great and heat dissipation is difficult.
高速电机的体积小、功率密度大和效率高，正在成为电机领域的研究热点之一。
When the beam is focused to a small spot, its power density is raised to produce sufficient heat to vaporize any material.
当光束在一个小点上聚焦时，其功率强度得以提高，并产生足够的热量来汽化任何材料。
A numerical method is presented for the two dimensional quasi steady state heat transfer on high power density laser welding processes according to the keyhole model.
对高能量密度激光匙孔焊接过程的二维准稳态传热进行了计算方法的研究。
When the beam is. focused to a small spot, its power density is. rais. d to produce sufficient heat to vaporize any material.
当光束在一个小点上聚焦时，其功率强度得以提高，并产生足够的热量来汽化任何材料。
The higher power density of the power IC the more serious heat -generating problems, that brings forward a new question of electronic heat cooling for discussion.
功率集成电路的功率密度越来越高，发热问题越来越严重，为现代传热技术在电子冷却领域的应用提出了新的课题。
The laser power density and the temperature of post heat processing have great effect on the sheet resistivity and TCR of PTC thermistor, and there exist optimum values for these parameters.
激光功率密度和后续热处理温度对PT C热敏电阻方阻和电阻温度系数影响较大，并都存在一个最佳值。
While the effect of the convection on heat transfer can be neglected at low power densities, melt flow assumes its importance as the power density increases.
随着功率密度的加大，对流的作用增强，其影响不可忽视。
This charcoal press owns the advantages of high production capacity, high density, low power consumption, low wear and also the output is with high heat, no pollution, and longer burning.
这种木炭机拥有高产能，高密度，低电耗，低磨损的优良特点，而且成品木炭燃烧时热量大，无污染，燃烧时间长。
The higher the power density, the less the heat diffusion.
功率密度越大，丝表面温度越高。
The higher the power density, the less the heat diffusion.
功率密度越大，丝表面温度越高。
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