Summary | Many left smoke trails that brightly colored the blue
skies.People were curious how the smoke trails were
created.More than 140 mentioned them in one hour on Sina's
Weibo microblog service.They work when high-boiling-point
reagents pour into the nacelle, or engine casing.With nitrogen,
the smoke sprays into the exhaust ing from the engine, and ...
skies.People were curious how the smoke trails were
created.More than 140 mentioned them in one hour on Sina's
Weibo microblog service.They work when high-boiling-point
reagents pour into the nacelle, or engine casing.With nitrogen,
the smoke sprays into the exhaust ing from the engine, and ...
en.ce.cn | 03 September 2015