anechoic

anechoic

1. (4) the vibration and noise experiment research of the submarine structure in anechoic pool.

(4)潜艇动力舱段结构模型在消声水池的振动与声辐射实验研究。

2. 10 m semi anechoic chamber

10米法半电波暗室

3. The internal structure appeared to be cystoid and anechoic in 15 cases.

15例囊肿内为无回声区,囊壁均匀、光滑,后方回声增强,5例内部为弱回声,囊壁均匀光滑。

4. Electric Field Strength Standard and Error Analysis for a Microwave Anechoic Chambers above 1GHz

1GHz以上微波暗室电场强度标准及误差分析

5. REQUIREMENT OF EMC ANECHOIC CHAMBER CHARACTERISTICS AND MEASUREMENT METHOD FOR ELECTROMAGNETIC LEAKAGE WITH 1 m METHOD

1m法电磁泄漏测量用电波暗室性能要求及测量方法

6. The patient was examined at 26 weeks, at which time the anechoic cyst was found to be located in the right upper abdomen and in front of the inferior ena caa (Figure 1).

26周检查发现囊性暗区位于右上腹，下腔静脉前方（图1）。

7. Construction of The 3m Semi Anechoic Chamber and Practice of EMI Testing Technology

3米法半电波暗室(EMC检测试验室)的建设及EMI测试技术实践

8. Three lesions were anechoic with well demarcated two-layer wall and one was echogenic.

4例作了超声检查，其中3例显示双层囊壁，囊内为无回声液性暗区。

9. 8 cases as hydrocele, Ultrasonogram shows anechoic;

8例为鞘膜积液，声像图表现为无回声；

10. CSI provide professional building services for all sizes of anechoic chamber and shielding room, we also provide testing system verification service.

CSI提供制造各类型尺寸的专业电波暗室和屏蔽室以及测试系统的校验服务。

11. EMC anechoic chamber

EMC屏蔽暗室

12. SMD Components, Total EMC Solution and Anechoic Chamber, Power Supply, LIP Battery Cells, Core, Transformer, Inverter, etc.

SMD部件，EMC整体解决方案，电波暗室，电源，锂电子电池电芯，磁芯，变压器，转换器等

13. anechoic enclosure

[电] 原用以表示声频低反射围场

14. It is the important reference for the evaluation of fully anechoic chamber performances.

为评估全电波暗室的性能提供重要技术依据。

15. Equipped with DAAS, LMS and other test system, the standard rooms and listen Anechoic room, can help customers product development and debugging.

产品广泛用于舞台音响，汽车音响，家庭影院音响，公共广播音响等。

16. A small size line array from Germany is introduced. Confirmatory and analyzing measurements are carried out in a large anechoic chamber, and then the measuring results are analyzed.

介绍了一种德国小型线阵列音箱，在大型消声室内作了验证性和分析性的基础测量，并对测量结果作了初步分析，提出了几点体会。

17. The fundamental design method of EMC semi anechoic chamber is explaned.An example, the ray-tracing technique is explaned, and the design result of 10m semi anechoic chamber is shown.

介绍了半电波暗室的基本设计方法,并举例介绍了射线法技术,给出了10m法半电波暗室的设计结果。

18. This paper gives an introduction to anechoic chamber and chamber-used absorber, and presents some cases and experience regarding the construction and maintainence of anechoic chamber.

介绍电波暗室的类型、各种吸波材料的特点,并通过许多实例,阐述电波暗室的材料选型以及电波暗室建造和管理方面的经验。

19. anechoic chamber

全寂房间

20. fully anechoic chamber

全电波暗室

21. Keyword： fully anechoic chamber;

关 键 词： 全电波暗室;

22. Keywords maze-model muffling cover;anechoic chambers;attenuation;sound absorption coefficient;chambers constant;

关键词迷宫型消声罩;消声小室;衰减量;吸声系数;房间常数;

23. The present method uses two measurements with two different boundary conditions to compensate for non-ideal anechoic termination.The results turn out that the measurement is accurate.

分别在两种不同的边界条件下进行不安装样品和安装样品两种状态的测量来对阻抗管非理想吸声末端进行补偿，准确的测得了材料的隔声量。

24. Design of Anechoic Room for Refrigeration and Air-conditioning

制冷空调用消声实验室的设计

25. hemi- anechoic room

半消声室

26. semi anechoic chamber

半电波暗室

27. octant anechoic chamber

卦限消声室

28. Keywords Satellite navigation;receiver;phase center variations;spiral slot antenna;antenna phase center calibration;anechoic chamber;choke ring;

卫星导航;接收机;相位中心变化;缝隙螺旋天线;相位中心标定;微波暗室;扼流圈;

29. Meanwhile, the insertion loss of DPF was measured at an anechoic laboratory.The comparison between experimental and calculating results demonstrates the correctness of the acoustic model.

同时在全消声实验室中测试了微粒过滤器的插入损失，将测试结果与计算结果进行对比，证明了声学模型的正确性。

30. At the same time, the Company in the electromagnetic anechoic chamber, shielded room design, construction, applications also have a great deal of technology and experience.

同时，本公司在电磁波暗室、屏蔽房的设计、建造、应用领域上也有极丰富的技术及经验。

31. Effects of physical parameters of the absorption material on absorption capability of anechoic tiles

吸声材料的物理参数对消声瓦吸声性能的影响

32. anechoic coating

吸声覆盖层

33. Precision methods for the measurement of sound power level in anechoic and hemi-anechoic rooms

噪声源声功率级的测定-消声室和半消声室精密法

34. Noise is measured in an anechoic room.

噪音值是在无音室中的测量值。

35. Therefore, there are only few proper test sits in shielded (anechoic) chambers, since the required facilities are very expensive.

因此, 只有很少的完全地测试在保护 (无回声的) 室中坐, 因为必需的设备非常贵。

36. Anechoic Chamber in the Inlet Room of Transonic Compressor Rig in Beijing University of Aeronautics and Astronautics

国内第一个压气机进气消声实验室在北京航空航天大学建成

37. Model Helicopter Rotor Aerodynamics and Acoustics As Measured in Tow Anechoic Wind Tunnels.

在两个无回声风洞中测量时模型直升机旋翼空气动力学与声学。

38. In the measurement of small sample in an acoustic cylindrical tube, measurement data with rigid backing should be taken as the standard of the performance of an anechoic coating.

在实验室小样品声管测试中，以较厚的钢柱作为背衬的测试数据来衡量吸声覆盖层性能更为合适，且易于实现。

39. In calculation of reflected level of quiet zone in anechoic chamber, a spot emission model is often used to simulate antennas characteristic.

在微波暗室静区反射电平计算时常采用点源发射模型模拟天线的特性,它适用于低频段或方向性差的天线。

40. Precision methods for the determination of sound power levels of noise sources in anechoic and hemi-anechoic rooms

在无回声和半无回声的室内测定噪声源声功率级

41. After having summed up the ways of generating geodesic,Presents a shortcut algorithm to calculate geodesic and the boundary curve of anechoic tile by means of the geometrical character of geodesic.

在测地线生成途径上进行了总结分析,并利用测地线几何性质给出了一种求测地线及消声瓦边界曲线的快捷算法。

42. The results of experiments done in anechoic chamber have shown that DAA has effective performances which just provide the fundation and feasibility of practical use.

在消声室的实验结果表明它具有较好的声吸收性能,为其应用作了初步的可行性研究。

43. The shape of cavity should be optimized in the design of anechoic coating.

在覆盖层设计中，空腔的形状应有一个优化的过程。

44. In design of anechoic chamber with higher quality, when requirements of quiet zone index are higher, it must use the geometrical theory of diffraction instead of the geometrical optics for accuracy.

在高性能微波暗室技术设计中,由于静区指标较高,采用一般的几何光学技术不能进行准确计算,因此需采用几何绕射理论技术。

45. Measuring Electromagnetic Leakages from Computer Based on EMC Microwave Anechoic Chamber

基于微波暗室的计算机电磁泄漏测试

46. Electromagnetic Compatibility Prediction for Scaled Ship Model in Anechoic Chamber

基于电波暗室的舰船电磁兼容性模型预测

47. anechoic tiles

外场声学覆盖层

48. Radio frequency anechoic chamber

射频暗室

49. Small anechoic chamber

小型电波暗室

50. Construction level of shielding chamber and installation method of absorbing material can directly influence performance of anechoic chamber.

屏蔽室的建造水平及吸波材料的安装方式直接影响着电波暗室的性能。

51. Acoustics design of facility anechoic chamber in industrial enterprises and its practice

工业企业用简易消声室的声学设计与实践

52. Steady state vibration and transverse stresses of submarine pressure hull with anechoic tile

带有消声瓦的潜艇耐压壳的稳态振动和横向应力

53. Test Results of high-range resolution images from a phased army radar in microwave anechoic mom are given, which demonstrate the validity of the analysis.

并给出在微波暗室里进行的相控阵试验雷达工作在宽带角电扫描情况下成像试验的部分结果，验证了理论分析的正确性。

54. The prediction of total sound power level agrees well with the data measured under anechoic conditions。

并通过表面振动预测了该发动机各部件表面辐射噪声声功率和发动机总的表面嗓声声功率。

55. A wall reflection model is established to meet accuracy requirements of radar tests,and it can be used to compute the maximum reflectance of a single wall in an anechoic chamber.

建立了墙面反射模型,用于根据雷达精度试验的要求计算微波暗室单个墙面的最大反射系数。

56. microwave anechoic chamber

微波暗室

57. Analysis and Design for the Absorbing Materials Used in Microwave Anechoic Chamber

微波暗室吸波材料的分析和设计

58. Detection of Return Loss in Microwave Anechoic Chamber

微波暗室回波损耗的检测

59. microwave anechoic cell

微波消声室

60. The Use of Microwave Bridge to Inspect Disbonds of Anechoic tiles on Submarine

微波电桥法检测隐身潜艇消声瓦的粘贴缺陷

61. Anechoic performance of micro-nonhomogeneous viscoelastic materials

微观非均匀粘弹性材料吸声性能研究

62. A 20-year-old patient, graida 2, para 1, carrying a single pregnancy at 22 weeks was referred for second-leel sonography for an abdominal cystic anechoic structure.

患者20岁，孕2，产1，孕单胎22周时行第二水平的超声检查发现腹部囊性暗区。

63. A car installed with different types of tire is put on the chassis dynamometer in an anechoic test chamber for measuring the in-car noise under coasting condition.

摘要对某轿车换装不同型号轮胎，在消声室转鼓上进行滑行工况下的车内噪声测试。

64. The typical sonographic presentation of primary malignant lymphoma of thyroid gland is a hypoechoic or anechoic, solitary or confluent lesion.

摘要甲状腺恶性淋巴瘤典型之超音波表现为低或无回音之独立或融合性病灶，若侵及颈部淋巴结，亦有相似之表徵。

65. The article elucidates the mechanism and charactenistic of noise when air compressor disperse, harness adopt by anechoic maze of chamber, achieve good results.

文章阐述了空压机排空放散噪声产生机理及特点,采用迷宫室式消声器治理后,取得了明显效果。

66. A NSA model of impact anechoic chamber ispresented herein theoretically.

文章首先经过推导和计算,得出了一套计算紧缩型暗室的归一化场地衰减(NSA)理论值模型。

67. anechoic area

无回声区, 平段

68. anechoic hall

无回声厅

69. anechoic room

无回声室 静室

70. an anechoic chamber.

无回声的房间

71. anechoic frequency response

无回声频率响应

72. radio wave anechoic chamber

无线电波回波室

73. anechoic chamber design

暗室建设

74. Anechoic chamber calibration

暗室相位中心标定

75. Beamwidth Modified Model for Calculation of Reflected Level of Quiet Zone in Anechoic Chamber

暗室静区反射电平计算中的波束修正模型

76. B-Ultrasonography revealed a complex light mass with low echo or anechoic area ...

术后可以利用B超早期诊断。加强产时监护、提高产科质量是预防的根本措施。

77. Non infected seromas after surgery are usually anechoic collections. Fluid collections complicated by infection or hemorrhage appear more complex, with ariable degrees of internal echoes, layering, and septa (Figure 2 ).

术后未感染的血清肿常为无回声的积液，并发于感染或出血的积液其表现比较复杂，内部回声程度、分层和分隔常不同（图2）。

78. It"s better than primary dissipative muffler in anechoic quality and aerodynamic quality.

此消声器与原消声器相比具有更好的消声性能和空气动力性能。

79. Effect of backing in the measurement of underwater anechoic coating with an acoustic cylindrical tube

水下吸声覆盖层声管测试的背衬研究

80. underwater anechoic

水声消声