There are differences in literary aesthetics between Chinese and French people. Small volcanic ash contains silica, and the melting point of this compound is 1100  degree. At present, the working temperature of turbine engines of most aircraft is 1400  degree. Once the volcanic ash is sucked into the engine, the dissolved silicon dioxide will be adsorbed on turbine blades and turbine guide blades, resulting in disastrous consequences. In 1982, The two planes once passed through the ash from the garongong volcano in West Java province, Indonesia. All eight engines of the two planes stopped and restarted after gliding from 11000 meters to 400 meters, resulting in an emergency landing.
passage mainly introduces that?
Volcanic ash has a serious impact on aircraft flight