用“downdraft”造句大全，downdraft造句
updraft and downdraft
The downdraft trumped two other developments that should have shored up the market.
downdraft constant - vacuum carburettor
Most cereal straws contains ash content above 10% and present slagging problem in downdraft gasifier.
Methodology of avoiding condensation and downdraft in displacement ventilation plus cooling ceiling system
Diverse lines of portable and stationary downdraft tables and control booths of varying sizes for fume, mist and dust collection provide highly efficient collection and filtration.
portable water jacket downdraft submersible pump
