The white trails look vaguely like the condensation trails, or contrails, left behind by airplanes, but they actually result from ship exhaust.
白色的痕迹疑似飞机留下的凝结尾迹或飞行云，但它们实际由轮船留下。
Exhaust air or inert gas containing the DMF is continuously sent to a recovery system where the solvent is recovered by condensation or absorption.
排出的含有二甲基甲酰胺溶剂的空气或惰性气体被连续送到回收系统，通过冷却或吸收的方式被回收。 收藏。
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