When ordered, the configurations of the unit should be indicated, such as, the air volume, static pressure (outer engine), the total static pressure of the fan, quantity of cold and quantity of heat.
机组配置的风量、机外静压或风机全静压、冷量、热量订货时务必注明；
The LED cold light source has the advantages of small volume, low energy consumption and lighting heat quantity, moisture and shock resistance and simple and convenient operation.
它具有体积小、耗能低、发光热量低、防潮、防震且操作简便的特点。
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