Depropanization is a procedure in the separation section of ethylene production and its effect is to separate component C3 from component C4 and C4 above.

脱丙烷是乙烯生中分离工段的一个工艺步骤,其目的是C_3和C_4以上组分分离。

It was concluded that the dye uptake difference between A and B line of JinYang brand finished fiber was caused by the decrease of sodion in the third monomer.

采用高效液相色谱电室,跟踪分析纺丝前工段各溶液中杂质含量。