The cuboid technology makes use of the property of expansion in cooling down and contraction in heating up of low melting alloys,together with shifting the reference base,to solve the head-ache problem of machining middling and long blades,which,because of their complex blade profile,are difficult to be fixed in a certain position and therefore effect the machining precision of their roots.

At present,several technological processes of producing ammonium molybdate,typical several methods of rare-earth doping molybdenum products and recent development of rare-earth elements doping molybdenum powder,molybdenum wire and molybdenum sheet and blooming process of molybdenum processing are elaborated respectively.

The present status and problems in the basic research and process development of coal liquefaction are analyzed.

There is no right methodology for traditional process development, so the time for development is too long, and to make right decision is difficult, even missing the chance for selecting the best process.

The authors in this paper have studied the mining technology, development and haulage style,the main slope construction factors and parameters to increase the last slope angle of the Bai-Yun eastern mine.

As a result of the failure to reflect the essence of certain data comprehensively and exactly using the conventional experimental methods,fuzzy comprehensive evaluation method for selecting mining technology was proposed.

In order to excavate East Fushun surface mine efficiently,optimum selection of reasonable mining technology was did according to geological condition of East Fushun open-pit mine.