常见例句双语例句We use the phase transfer catalyst to prepare DPDTT: Tetrabutylammonium hydrogen sulfate ( TBAS) as phase-transfer agent.最后利用相转移催化剂法，B在相转移催化剂四正丁基硫酸氢铵的催化下反应生成目标产物DPDTT。 返回 tetrabutylammonium hydrogen sulfate