Two steps chilling technique and direct chilling technique are two methods of meat chilling processing technology Through out the experiment,direct chilling technique is better than two steps chilling technique,and refrigerating firm can acquire increased benefit from i

Based on the results obtained from a computer simulation program and a previous published paper, industrial experiments for the new two-period freezing technique were conducted in a food freezing plant using two-stage integral compressors.

Using slow freezing and liquid nitrogen quick freezer by the fashion of spray and flowed state,the Pleurotus ferulate varnebrodensis lenzi freezing technics was studied through analyzing the freezing curve at different temperature,freezing speed and rate of juice leakage.

After analyzing traditional ultimate load-carrying capacity,calculation formula,adding secondary axial force,basing on two-stage-working principle,renewing the definition of secondary moment and considering internal force due to lateral deformation four calculation methods of lateral restraint are given out; Hinged joint in beam end,pin joint in column end.