Random good picture Not show

31. Objective: To compare phosphoric acid etched and laser etched human enamel surfaces and evaluate the possibility of using laser etching as a new technique to take place the conventional acid etching.

32. The product phosphogypsum will restrict development of wet - process phosphoric acid.

33. The production practice shows that addition of a proper amount of phosphoric acid for bricking of silicon carbide tray of the re-distiller is favorable for extending lifetime of the re-distiller body.

34. Phosphatidyl choline is a naturally occurring molecule that is composed of choline, phosphoric acid and hydrocarbons.

35. The invention discloses chemical composition of phosphoric acid kitasamycin and a method for preparing the same.

36. The known ingredients in present day Coca-Cola are water, caffeine, phosphoric acid, vanilla, various oils and essences and extracts of the coca leaf and the kola nut.

37. The results show that in contrast to phosphoric acid catalyst, the production of cumene on zeolite catalyst exhibits low operating cost, high product yields, high product purity and little corrosion.

38. The method was used to determine the content of di-phosphorus pentoxide in phosphoric acid and the result was satisfactory.

39. The relationship between structure and composition of higher carbon alcohol phosphoric ester fat liquor and leather properties was studied.

40. The tricalcium phosphate constituent is converted to phosphoric acid and calcium sulfate.

41. This article discussed the influence factors of productivity of formic acid such as the mol ratio of sodium formate and phosphoric acid, the addition of phosphorus pentoxide, vapouring temperature.

42. The occurrence of phosphoric dolomite indicates that a restricted bay or lagoon environment, and a semiarid climate during Telychian Stage of Silurian in this area or adjacent region.

43. In this paper the electrochemical reduction mechanism of selenious acid(H 2SeO 3) in phosphoric acid solution was studied by rotating ring-disc electrode and cyclic voltammetry techniques.

44. The crude phosphoric acid made from low-grade phosphorite was successfully purified through the steps of solvent precipitation, defluorination and desulfuration etc.

45. The invention silicon phosphoric acid aluminum molecular sieve which has AEL structure and the manufacturing method.

46. The article deals with the BESA phosphoric acid process by wet purification.

47. The principal acids used are phosphoric, citric, fumaric, tartaric, and malic acids.

48. Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.

49. Development in research on purification of wet - process phosphoric acid was introduced briefly.

50. DNA and RNA as the heredity matters, they belong to phosphoric di-ester that is their bridge linkage group.

51. The process technology of manufacturing potassium dihydrogen phosphate by double decomposition with wet- process phosphoric acid purified by reaction medium circulation was introduced in this paper.

52. The paper studied the esterification process between ricinus oil and phosphoric anhydride as well as influences to the reaction by making up prescription of materials and temperature.

53. The neutralization reaction of lithium hydroxide and phosphoric acid is adopted to produce lithium phosphate.

54. This paper is concerned with properties of Fire-retardant and its composition of DPB which include Dicyandiamide, Phosphoric acid and Boric acid.

55. The operating condition of Rhone-Poulenc process and the equipment for phosphoric aicd concentration in phosphoric acid plant of Guixi Fertilizer Co. , Ltd. are described.

56. Objective : To investigate the effect of etch with 35 % phosphoric acid on enamel cracks.

57. The cerous phosphate nanophase fluid is produced from cerous nitrate and phosphoric acid by settling method.

58. Used phosphoric acid, aluminum hydrate and nihil album as materials, a new type of anticorrosive pigment zine aluminium phosphate was prepared with coprecipitation method.

58. Wish you can benefit from sentencedict.com and make progress everyday!

59. The phosphor yield of domestic feed grade calcium monophosphate production processes is low, and there are a few production plants using the phosphoric acid concentration defluorination method.

60. The geographical location of the phosphoric acid plants follows a different pattern.