数量平均纤维长度 mean length
数量平均每包裹 QTY PER PARCEL
平均数量 xdyerage quantity ; average quantity
数量和血小板平均体积 mean platelet volume ; MPV
一项研究表明，德国妇女想要的孩子的数量平均只有1.75，远低于更替水平。
One study showed that, on average, the number of children German women want is just 1.75, far below the replacement level.
一项研究表明，德国妇女想要的孩子的数量平均只有1.75，远低于更替水平。
One study showed that, on average, the number of children German women want is just1.75, far below the replacement level.
这意味着自1899年至2008年之间，浮游植物的数量平均每年减少约百分之一。
That translates to an annual drop of about 1 percent of the average plankton population between 1899 and 2008.
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