From the angle of coding, the meaning and content expressed in the form of language are required proper quality as well as proper quantity.

)on the comprehensive quality(maximal warp,volume shrinkage ratio and surface sink index)of mobile phone cover injected part are studied by using Moldflow analysis software and orthogonal experiment method.

Fair,just,scientific and rational supervision and evaluation system is conducive to the sustainable improvement of comprehensive quality of medical institutions.

Based on a series of surveys and researches,the paper introduces the indexes for evaluating the comprehensive quality of the port project according to the port project characteristics,establishes an evaluation system for the port project with fuzzy method and presents the case-model for Nansha-port project evaluation.

Investigation on the microstructure and bending strength of welded joints of hard alloy YG30 and steel 45;

Study on laser cladding hard alloy with electromagnetic stirring;

Study on vacuum brazing process to join steel SN2025 with hard alloy;

Study on the coated cemented carbide with gradient structure by a special sintering technology;

〗Frition and wear property of CNx deposition on cemented carbide;

Finite element analysis on carbide anvil of BELT device;

A study of efficiency for machining carbide with different electrode material in EDM;

A Carbide Forming Milling Cutter with New Structure and Its Design Procedure;

Study on complex modification of Al-Mg-Si alloys;

By means of analysis of microstructure and measuring of impact toughness and hardness,and verification by real manufacture and application,the Si-Mn steel with rare earth and boron complex modification is better than traditional high Mn steel to produce tractor track guard in the wide range of temperature and the low cost and long life.

The results show that the complex modification of P and RE can obviously improve wear resistance of hypereutectic Al-20%Si alloy.