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据美国统计局延期出版的 1 998年工业报告 (ＭＡ32 7)“耐火材料出口量”统计显示 ,耐火材料出口价值发生以下变化 :( 1 )耐火材料生产厂的出口价值均下降了 7% ,从 1 997年的 2 5.388亿美元下降到 1 998年的 2 3.1 98亿美元 ;( 2 )粘土质耐火材料的出口价值降低了 5% ,从 1 99
According to statistics released by the Bureau of Statistics in the 1998 Industrial Report (MA32 7) “Refractory Materials Export Volume”, the export value of refractories shows the following changes in value: (1) The value of exports of refractories production facilities both decreased by 7% from The value of exports of clay-based refractories decreased by 5% from $ 123.888 million in 1997 to $ 232.88 million in 1998; from 99%