downdraft造句怎么写

downdraft constant - vacuum carburettor

portable water jacket downdraft submersible pump

The downdraft trumped two other developments that should have shored up the market.

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.

Methodology of avoiding condensation and downdraft in displacement ventilation plus cooling ceiling system

updraft and downdraft

Most cereal straws contains ash content above 10% and present slagging problem in downdraft gasifier.