The mass percent concentration of water in the MPC sample was 0.26%, which was determined by Karl Ficher titration.
卡尔·费休水分测定结果表明，MPC样品中含水量为0.26%(质量百分比浓度)。
The preparation process comprises the following steps: 1), preparing tannin solution at a mass-volume concentration of 3 to 20 percent with distilled water;
其制备过程包括如下步骤：1）用蒸馏水配制质量体积比为3-20%浓度的单宁溶液；
The preparation process comprises the following steps: 1), preparing tannin solution at a mass-volume concentration of 3 to 20 percent with distilled water;
其制备过程包括如下步骤：1）用蒸馏水配制质量体积比为3-20%浓度的单宁溶液；
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