• The process is carried out by using Soxhlet set, as experiment unit, with methyl sulfonic acid as a catalyst and magnesium sulfite as dehydrating agent, giving 97.

    报道合成乳酸丁酯的新方法 ,乳酸和正丁醇为原料 ,在甲基磺酸催化下以亚硫酸镁脱水剂 ,索氏提取器进行回流合成。

    youdao

  • The chemical base for the bisulfite can be ionic calcium, magnesium, sodium or ammonium, Sulfite pulping can be carried out over a wide range of PH.

    亚硫酸氢盐里离子离子,离子,根离子等化学可以电离。

    youdao

  • The chemical base for the bisulfite can be ionic calcium, magnesium, sodium or ammonium, Sulfite pulping can be carried out over a wide range of PH.

    亚硫酸氢盐里离子离子,离子,根离子等化学可以电离。

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定