2.Manual molding had been used for the nodular iron front wheel boss and differential mechanismcase, and chills were used to prevent shrinkage defects.
5.Decision mechanism of credit in an imperfect competitive credit market is studied in this paper. The design of such mechanism in the case of complete information is given.
8.The design optimization of jig construction, jig body, locating mechanism of crank case cores, jacket cores assembling vehicle and jig supporter was discussed.
9.It helps improve the safety management of enterprises to carry out safety ensuring mechanism creatively. A case in point is to practice internal safety marketing in enterprises.
