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选言证明
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选言证明
xuǎn yán zhèng míng
运用选言直言推理所作的证明。间接证明的一种。以论题为一个选言支,构造一个穷尽该问题一切可能的选言判断,并断定除该选言支外,其他选言支都是假的,从而断定论题是真的。如为了证明电灯突然熄灭是因为灯泡坏了,可以构造选言判断如下:“电灯突然熄灭,或者是因为停电,或者是因为保险丝烧断,或者是因为线路发生故障,或者是因为灯泡坏了。”然后根据事实断定前三个选言支为假,从而断定论题是真的。
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lost-wax
lost track
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lost track rate
lost traffic
Lost Trail Pass
Lost Treasures of El Dorado
lost tribe
Lost Tribe of Lsrael
lost tribes
lost tribess
Los t truly
Lostumbo
Lostun
lost units
lost wax casting
lost-wax casting
lost wax casting process
lost-waxes
lost-wax method
lostwax molding
lost wax molding
lost-wax molding
lostwax moulding
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更新时间:2026/9/21 21:32:39