downdraft

n.

倒灌风，下向通风，向下气流；

1. No watermark on a non-verbal-visual part of the silicone rubber layer easily scratched, Downdraft, expose their monlchamus photographicsensitive resin layer.
   无水印版上否图文局部的硅橡胶层便当被划伤，而露不入其下吸不朱的感陡树脂层。

Handbook of Biomass Downdraft Gasifier Engine System
Dynamic behaviour of stratified downdraft gasifiers
Computer simulation of a downdraft wood gasifier for tea drying.
Experimental investigation of a downdraft biomass gasifier
Gasification of hazelnut shells in a downdraft gasifier
Assessment of microburst models for downdraft estimation
Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifier
Experimental studies on producer gas generation from wood waste in a downdraft biomass gasifier.
Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier
Dutta, A.: Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifier. Energy 32(9), 1660-1669