The distillation conditions including overheadpressure, reflux ratio for the recovery of 1,2- propylene glycol were studied.
本文还研究了精馏的一些操作条件对1,2-丙二醇精制过程的影响(塔顶压力、回流比等)。
2
So the incentive for the consumer to avoid those overhead costs has increased quite noticeably.The retail sector is therefore under pressure to reduce those costs.
消费者对于避免这些管理成本的敏感性也增加的非常显著,零售业也因此处在试图减少这种成本的压力之下。
3
FIG. 2 Internal Cylinder Configuration, top. Overhead view of low pressure liquid withdraw, bottom left. Overhead view of liquid and high pressure gas with-draw, bottom right.