The characteristic drying curve of PVC was achieved and it can be expressed by The critical moisture content xc and the mass transfer coefficient K was measured, and its value was about 2% and 6×10-4 kg·-2 m-2· s-1 respectively.

According to the drying-rate curves determined by atmospheric wing dryer,the drying arte of the TPE rapeseed meal and cottenseed meal and also their critical moisture contents under certain co.

Compared with the drying feature in the static condition, the drying of the solid particles in the fluidized state has the following special features: high drying rate and low critical moisture content.

he method for determining the critical moisture content in material under fluidized state with gasphase method and solid phase method is presented.

This paper summarizes recent research results on soil element background values and heavy metal environmental capacity in the region, and discusses the differentiation pattern of the environmental background value and critical content of the main zonal soils in Guangdong.

By pot culture experiment, the effects of lead added to latosol with different concentrations on peanut crop growth and remains were studied, and the referential critical content of lead in peanut crop was fut forward from the aspects of hygienic quality of agricultural product and effect of crop.

Firstly,this paper experimentally made a study of the explosion limit rules of flammable gas(CH4)and its change rule of critical content of oxygen after inert gas(N2)was added into it,and measured the explosion limit range of methane and its safety content of oxygen.

Dynamics of absorption and accumulation of Lentinula edodes accumulated heavy metals from culture medium and critical contents;