Design and manufacture methods of injection mold for the defecator body were introduced,and working process of mold was stated.

介净管体注射模设计与制造方法,并阐述模具工过程。

The operation of the slurry pumps for transferr in g sludge in the dilute phosphoric acid defecator in the phosphoric acid producti on is mostly not satisfactory.

磷酸生产中输送稀磷酸澄槽淤渣泥浆泵,各行情况都不够理想。