机械

systems present the advantage of improving performance, modularity, integrity and reliability while allowing incremental expansion without plete hardware replacement. It offers a promising

n. highspeed cutting thin wall ponents change the part substitutes certain crafts, like electric spark machining, abrasive machining and so on High strength and the high degree of hardness39。 s

ration signal analysis and fault feature extraction. However, classical spectrum analysis also has obvious disadvantages. Fourier transform reflects the overall statistical properties of a signal,

aracteristics to group, classification and code for each of the ponents, and then establish the typical ponents of each type of library and the processing technology of group library. Processing

iciency of the electric field of the dust. If vapor leaks i n the boiler, flue gas will increase the humidity, although in a very short time because of smoke and quenched and tempered by lower

ine the oil film between the piston and cylinder liner, resulting in cylinder scoring. engine temperature is too high As the engine temperature is too high, so that excessive expansion of the piston

be easy to achieve in the larger context of the lootive speed, but such Motor due to the mutator, manufacturing and maintenance are very plex, and also greater volume), the AC into DC lootive in the

t large quantities of capacity of production efficiency abroad were produced having used the transfer machine to produce , and studying and build in this kind of production line in the industry

the travel of the pistons and piston rings. The con rod is under tremendous stress from the reciprocating load represented by the piston, actually stretching and relaxing with every rotation, and the

e will change. Grinding burns when a surface temperature of phase change to millers temperature above, metal surface microstructure occurred change, make the surface of the metal strength and