Issues related with processing scheme and equipment selection of the etherification of FCC gasoline light fraction were discussed based on engineering design standpoint.
从工程设计方面重点探讨催化裂化汽油轻馏分醚化工艺中流程和设备选择方面的问题。
The changing extent varied with different type of light-temperature response. The selection should be based on the genotype of the materials and the performance of local check.
不同光温型材料变化幅度不同，要根据材料的基因型，按照相应的对照品种进行选择。
The construction methods of pipes are discussed in light of the current situation of household-based heat metering heating and conclusion is drawn that the selection of pipes should be emphasized.
本文针对我国单户热计量采暖的现状，探讨了单户热计量采暖管道敷设的方法，建议重视单户热计量采暖管材的选用问题。
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