| 摘要 |
Marginal edge portions of a pair of glass sheets are welded together to make a multiple glazed unit by sequentially imposing a voltage on marginal edge portions of a sheet during side heating cycles followed by alternately imposing a voltage on opposed corners of the sheet during diagonal heating cycles. During the last side heating cycle, the voltage applied to the next to last marginal edge heated is for a shorter time period than the time period in which the first marginal edge was heated. In this manner, the average resistance of the electrical paths during the first diagonal heating cycle is substantially equal.
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