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6 N; Z r* Q$ p; x& J7 q, L _: {4 g. o" h# }. k( E 土工布滲透系數coefficient of geotextile peameability' N7 X S, F9 E4 W( d6 j+ m% x 4 q1 U1 n0 T$ y9 Z. K ( {/ a$ E* ...
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