and after condensation of the tower top distillates through a condenser, extraction is carried out by water, the extraction liquid containing acetaldehyde is discharged outside for independent treatment, and the faffinate and the tower bottom reflux substances are put back to a main reaction system to complete the procedures of follow-up processing with the left 'light phases'.
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These phases should show up as tiny variations in the intensity of the observed light, researchers have predicted.
研究人员预计，这些相位应该表现为所观测到的光线在亮度上的微弱变化。
Medium phases are less commonly used, but are sometimes placed between light and heavy training phases.
中度训练很少被使用，但有时用在轻度和高强度两种训练间过渡。
The mechanical seal for light hydrocarbon pump belong to the seal for liquid and gas phases.
轻烃泵机械密封属于汽液两相密封。
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