锅炉工可能专注于本行业的索具和吊装，准备和布局，或焊接方面。
Boilermakers may specialize in rigging and hoisting, preparation and layout, or welding aspects of the trade.
介绍了PC B板布线、元件布局的原则，焊接后进行硬件电路调试，介绍了各模块的调试方法。
Introduce the PCB board layout, the principle of the layout of components, debug the hardware circuit after welding and present the module debugging method.
其硬件部分难点在于元器件的选择、布局及焊接。
The hardware part of the difficulty lies in the choice of components, layout, and welding.
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