The securities are linked to commercial loans and medium - grade mortgages.

这些证券都与商业贷款和中级抵押贷款有关.

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There seems no ideal method to mine medium grade, gentle dip and medium thickness orebody.

对于矿石价值中等、品位中等的缓倾斜中厚矿体,目前无理想的采矿方法.

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Medium grade: water and oil pumps, instrument inspection covers , cylinder heads, sumps and most machined surfaces.

中粘度: 水泵和油泵 、 仪表的检查孔盖、气缸盖 、 油底壳和几乎所有的机加工表面.

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Students of low and medium grade are hard to switch from multiplication to ratio.

中低程度的学童顺利将倍的概念与比、比值做转化是有困难度的.

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