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F(xin)ˆTľӹõķ 䓽zg 1 m ̶\ʯ\W(wng)ӽǰ ʹoھW(wng) ԱCW(wng)ƽȺQֱ
\ʯ\W(wng)(ni)bʯϲZʯL(fng)Ƭʯ ʯϏ(qing)ȴ 30 MPa ʯx 10 cm 30 cm ˹ɔ[ʯ
\ʯ\W(wng)\һ(g)\ʯ\W(wng)(ni)bõһʯϺ \ʯ\W(wng)(ni)Ҳbõһʯ Ȼԓ\ʯ\W(wng)(ni)ǰc
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