发布时间:2025-02-02 20:04:34
任意用一段电阻丝接上但须宁大勿小然后逐渐剪短直至在热状态下达到R5J即可冷状态下量的电阻不能用因为电阻丝有温度升高电阻值上升的趋势
做橱柜用石英石台面木工板柜体吸塑柜门37米长墙上做吊柜加罗马柱得多少钱
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