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.

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

According to directly electroplating technology of AMT company, automation processing is analyzed of the electroplating waste water emerged in circuit board production, and the corresponding control measurement is put forward .