state-selecting device
... 静[电]库[仑] stateoulomb 状态选择装置 state-selecting device 静[电]法[拉]{电容的cgs静电单位 statfarad ...
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装置内物料成分复杂，状态多样，必须合理选择水、干粉、泡沫等灭火剂。
In the device, the material composition is complex and the state is various, so it is necessary to choose water, dry powder, foam and so on.
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