n.六亚甲基四胺，乌洛托品...

methenamine的音标：methenamine的英式发音音标为：[me'θi:nəmi:n]methenamine的美式发音音标为：[mə'θinəˌmin]...

Following that, two effective additives - syclotersuphone and methenamine are found by series experiments.然后通过大量实验筛选出两种有效添加剂环丁砜和六次甲基四胺....