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Following that, two effective additives - syclotersuphone and methenamine are found by series experiments.然后通過大量實驗篩選出兩種有效添加劑環(huán)丁砜和六次甲基四胺....

n.六亞甲基四胺，烏洛托品...

methenamine的音標：methenamine的英式發(fā)音音標為：[me'θi:n?mi:n]methenamine的美式發(fā)音音標為：[m?'θin??min]...