设计了一种新颖的金属筒式加热器，使气体激光放电管轴向温度分布均匀。
A novel heater with a metal pipe was designed which is used encircling the discharge tube of a CuBr laser, resulting in homogeneous distribution of axial temperature.
在热声发动机系统中，回热器的振荡换热是沿流体通道的轴向，而加热器振荡换热主要是沿流体通道径向。
In thermoacoustic system, the oscillating heat transfer in regenerator is along the axis direction of the stack and in heat exchanger it is along the radial direction of the tube.
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