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31. A computerized remote centralized monitoring system for underground ventilation of multistage fan stations is presented.

32. Based on the process system synthesis approach, the optimum design of various multistage reverse osmosis (RO) desalination systems was studied in this work.

33. The reasons of unusual axial moving in multistage centrifugal pump were analyzed.

34. Methods A total of 550 students in 4 junior schools were sampled with multistage sampling and surveyed.

35. These results are used to discuss the optimizing design of a CW laser seeded multistage dye laser amplifier .

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36. The FE analysis to the rotor of a multistage centrifugal pump has been studied based on the software ANSYS. The entity model and FE model of the rotor are built for the static and modal analysis.

37. It is also feasible to adopt the adiabatic fixed-bed reactor and the techniques of multistage reactions and interstage cooling.

38. Methods 1080 rural residents in Chaoyang City were selected as respondents by multistage sampling.

39. It is important that the data mining of multistage process should be study in the each phase.

40. The feasibility of slope reinforced by grouting is proved and multistage grouting ( PG ) is put forward.

41. This paper classifies the routing strategy of multistage interconnection network, and analyses whether fat-tree fits with these classifications.

42. The advantage and application prospect of multistage compound option in modeling sequential decision were discussed, and the critical difficulties and solutions in actual application pointed out.

43. They indicate this amplifier's antijamming ability is very high, the gain multistage changes steadily, its temperature voltage drift is low, and the pulse linearity is good and so on.

44. The present invention discloses multistage irides image automatical focusing method combining frequency domain and time domain, method key being the image definition.

45. In this article, we will study the multi-dimensional multistage fuzzy optimal control question, which mainly draw support from the Bellman optimality principle.

46. Multistage insulation reactor in reaction must maintain temperature at aboutoptimum temperature.

47. We propose a multistage SAR target recognition process based on target detection, target segmentation, target aspect estimation and invariant feature extraction.

48. When multistage amplifier has double input double - output differential circuit, the two methods produce different calculating results.

49. We randomly selected 806 children under 6 years of age from 45 primary anganwadi (childcare) centres in Chandigarh, Punjab, India, that were chosen through multistage stratified random sampling.

50. Originally, it belongs to the syntectic granite series, and about the source, belongs to mixed type of crust mantle having obviously multistage magmatic activities.

51. Single and multistage pressure gear pumps, hydraulic motors and valves for construction machinery , vehicle mounted machines.

52. The multistage reliability growth model of exponential life distribution is researched under the mode of failure lingering repair.

53. Multistage centrifugal pump in the course of operating, will produce axial force, balance problem of strength this never got basic settlement for many years.

54. Consider fluid person who compress and multistage centrifugal pump trends nature actual conditions of axial force, Have analysised on the dynamic characteristic of this system in the article.

55. A multistage operation greatly narrows the residence time distribution and cut down this bypassing.

56. In this paper, the estimation of prevalence and it's variance calculating are discussed when clustering sampling, multistage sampling and stratified sampling being used simultaneously.

57. Morphological gradient operator is researched and analyzed, a new multistage morphological gradient operator is presented, which is fit for edge detecting of X-ray digital image.

58. Methods We interviewed 7302 families by using stratified multistage sampling in 40 counties of 5 provinces in western China.

59. A new type of solar energy seawater desalination device — a multistage film type solar distillator is introduced in this paper.

60. Separation of durene from C_(10) aromatics was carried out by integrated separation technologies of combining extractive distillation with multistage crystallization.