| http://www.w3.org/ns/prov#value | - While the upper layer 117 possesses such function as mentioned above, it is not always necessary to provide this layer, if the heat generating resistive layer 116 has the liquid-resistant property and it brings about no apprehension at all as to the electrodes 118, 119 being electrically short-circuited through the liquid, but it may be designed as the electro-thermal transducer of a construction,
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