Dong Zhengchao Liang Wei Zhao Yonglin Hong zhengping
Issue 3, Pages: 48-52(1995)
摘要:Atomic dipole squeezing in the intensity-dependent coupling J-C model interacting with SU(1,1) coherent field is studied in this work. The relations between atom-ic dipole squeezing and field intensity as well as detuning are discussed through numerical calculation. Some new behaviors of this system different from those of others are found.
摘要:This article introduces photorefractive crystal’s physical characteristics and summerizes various experiments with photorefractive crystals for holographic interferome-try.
摘要:In this paper, applying ellipitic integral to calculate the electric potential due to a circular charge, and magnetic field due to a circular coil current, this calculation method can be used in calculating many similar problems.
关键词:Circular charge;Circular current;Electric potential;Magnetic field;Ellipitic integral
摘要:This paper analyses the factor of beauty in analytic geometry by means of aesthetic of mathematics, provides a valuable reference for aesthetic education in teaching analytic geometry.
摘要:This paper gives existence and uniqueness condition of solutions of the in-tegral equation with variable separable kernel, and It’s elementary solutions.
摘要:This article presents a new minimum deviation algorithm, which is used in machining general curve, curved surface as well as listed curve. This algorithm is particular-ly suitable to microcomputers in numerical control system.
摘要:In this paper, a new high ability “full differential pressure” winddriven gen-erator guiding by single-chip microcomputer is introduced, and its control system is briefly discussed.
摘要:In this paper, we study the nitrating and analytic conditions of red ink. The best result will be obtained when HNO3:HCLO4=4:1 is present in the solution.Citric amide and KCN are added to the solution to prevent the precipitate of hydroxide and preclude the unnecessary ions before the value of PH is adjusted to 8. 5-9. 0 with NH3 ?H2O. then trace lead is extracted with CHCL3, and reacts with H2Dz to form red complex be-ing determined by 721 spectrum meter.
关键词:H2Dz;Extractive Seperation;Nitration;Analysis of trace lead
Yu Xiumin Chen yanjing Jiao Qiang Hu Qingyun Cheng Qiue
Issue 3, Pages: 85-87(1995)
摘要:Two electrodes were placed in a vertical electrolyser and the negative elec-trode is above and the positive is below. A ferrous sulfate solution acidized with sulfuric acid was leaded into the electrolyser above and flowed out of the bottom, hydrogen gas gave up at the top. Electrolysis oxidating solution did not diffuse without the diaphragm. A mix solu-tion of Fe and Fe flowed out from botton.
摘要:The chemical cleaning of car engine cooling system is a new means. We have researched the cleaning solution and the corrosion inhibitor. In this article, we introduce mainly the formul’ s design, using condition and technological process. The main merits of the chemical clean are practicable and safe.
关键词:corosibn inhibitor;chemical clean;cooling system