用“airborne dust”造句大全，airborne dust造句
That means 4, 594 fewer tons of airborne dust each year until at least 2009.
measurement of airborne dust by the membrane filter method
concentration of airborne dust
Filtered ventilation fans prevent airborne dust particles from being drawn into the chassis.
We make the study and application of airborne dust control technology on urban bare land, and shall construct the zone of application and demonstration of sand protection and control technology etc.
