常减压蒸馏装置设计方案的对比的英文

comparison of the design schemes for atmospheric and vacuum distillation unit

• 常:    ordinary; common; ...
• 减压:    reduce pressure; d ...
• 蒸馏:    distillation; dist ...
• 装置:    installation; devi ...
• 设计方案:    design proposal; d ...
• 的:    4次方是 The fourth po ...
• 对比:    contrast; comparis ...