刮板運(yùn)輸機(jī)設(shè)計(jì),運(yùn)輸機(jī),設(shè)計(jì) The Ninth International Conference on Electronic Measurement Non-metallic wear particles which result from combustion and failure of the seal and filter device; Environmental pollutant particles, including various particles in the air, especially seen in open systems, where the contamination level is higher and the contaminant usually exists as oxide. The sizes of these particles are between 1-40