求翻译：采用卡尔.费休法，卡尔.费休法是应用最广泛的测定微量水分的方法，尤其适用于易变质的有机物中水分的测定，卡尔.费休法是一种非水溶液氧化还原滴定法，碘将二氧化硫氧化成三氧化硫时需要一定量的水分参加反应，从消耗的碘量可测定水分的含量，所用的标准溶液是由碘、二氧化硫、吡啶和甲醇按一定比例混合而成。该标准溶液称为卡尔.费休试剂。是什么意思？

Used Karl. fee Hugh method, Karl. fee Hugh method is application most widely of determination trace water of method, especially applies Yu easy metamorphic of organic in the water of determination, Karl. fee Hugh method is a non-water solution oxidation restore titration method, iodine will sulfur dioxide oxidation into three oxidation sulfur Shi need must volume of water participate in reaction, from consumption of iodine volume can determination water of content, by with of standard solution is by iodine, and sulfur dioxide, and pyridine and methanol by must proportion mixed and into. This standard solution is called Carl. Fischer reagent.