摘要:This paper gives two dimensioned variable linear differential system and finds the general expression under the cicumstance of some known solution; and by direct use of this formula it gives some kinds of two dimensioned variable linear differential system and its general expression, which is useful both in theory and practice.
关键词:Variable coefficient;Linear differential system;Formula of general solution;Solution finding theorem
摘要:The clamping fixtures which function because of temperature change, such as paraffin consolidation, ice consolidation and cazin, were analized in this paper. Selecting principles for different kinds of machine tool fixture based on liquid-solid transformation technology were summed up also.
摘要:The combinded grinding method of steel-bonded carbide, emploied EDMG, is presented in this paper. The results of experiment indicate that EDMG is a kind of effective combinded grinding method of steel-bonded carbide.
摘要:In the basic of the contradiction of cylinder cushioning and positioning used in robots, a new scheme for cushioning and positining control system is presented. A proportional valve-cylinder system controlled by a self-organization fuzzy controller has been designed and completed. Experiments show that the adaptablity of the self-organized fuzzy controller works very well in different work condition, and can nealize variable cushioning stroke.
摘要:Classification of fluid medium was done based on their physical state, and the characteristic feature of every kind of them was analyzed. Additionally, selecting principle was summed in a systematic way.
关键词:Fixture;Fluid medium;Steel ball;Fluid plastics;Vaseline;High drop point grease;Hydraulic fluid
摘要:Einstein mass-energy relation expression is a important result of relativistic dynamics, and usually is known as the one of the signs of new era . This paper gives a distinct explanation of it’s physical meanings from five aspects.
摘要:In this paper , we have determined bacterial growth thermograms of fungistatic action using a 2277 thermal activity monitor. We also have calculated the growth rate constant at different concentration drug with the optimum concentration of drug.
关键词:Drug;Fungistatic action of bacteria;Microcalorimetry