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\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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