两摩擦表面被一层液体隔开，摩擦性质取决于液体内部分子间黏性阻力的摩擦状态称为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24897' and id < 2124607 and id<>'2124607' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24897' and id > 2124607 and id<>'2124607' order by id asc limit 5