Hole of nominal size connects with pneumatic operation organ, Threr is a square body protruding out which directly connects with the internal octagon of pneumatic operation organ.
标准尺寸的孔与气动执行机构连接。中间为一伸出体外的方身，直接与气动执行机构内八角相连。
SCOPE This Standard sets out the method for determining the compactibility index, for concrete, where the expected slump is less than 10 mm and the nominal size of aggregate does not exceed 40 mm.
范围本标准对混凝土压塑性指数的测定方法(在预计的坍落度小于10mm，并且骨料的标称粒径不超过40 mm的情况下)作出了规定。
SCOPE This Standard sets out the method for determining the compactibility index, for concrete, where the expected slump is less than 10 mm and the nominal size of aggregate does not exceed 40 mm.
范围本标准对混凝土压塑性指数的测定方法(在预计的坍落度小于10mm，并且骨料的标称粒径不超过40 mm的情况下)作出了规定。
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