所用的加热炉的尺寸与型号要进行控制，使每项操作的温度能够在给定的范围内。
The furnace must be of the proper size and type and controlled, so the temperatures are kept within the prescribed limits for each operation.
精确的温度控制、进水控制、加热控制、元器件配组。
Precise temperature control, water control, heating control, component distribution group.
材料与方法：采用温度控制器和相关电路实现水浴的加热和保温，需要时温度可调节。
Methods: Temperature controller and relative circuits were used in the water bath for calefaction and heat preservation with temperature adjusting when necessary.
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