声聚焦,acoustic focusing
1)acoustic focusing声聚焦
1.Influence of coupling liquid on acoustic focusing in ultrasound therapy;超声治疗中耦合液对声聚焦影响的研究
2.Shallow water acoustic focusing of noise radiated from moving targets within measuring distance;浅海运动目标辐射声测量距离内声聚焦特性研究
3.Acoustic shielding and acoustic focusing多途信道中声屏蔽及声聚焦
英文短句/例句

1.Error Analysis in Radiated Noise Measurement Due to Acoustic Focusing of Typical Sound Sources典型声源声聚焦引起辐射噪声测量误差的分析
2.Research on near field focus beam-forming and beam null-forming近场声聚焦波束形成与波束零陷研究
3.Design and Applications of 20 MHz Ultrasonic Focused Transducer20MHz超声聚焦换能器的设计及其应用
4.Researches on Acoustic Focusing and Acoustic Covering in Multi-path Channel of Shallow Water浅海多途信道中声聚焦与声屏蔽技术研究
5.The measurement of distribution of extericr wind noise of automobile by acoustic mirror声学聚焦镜测量汽车车外风噪声分布
6.An Experimental Study on Acoustic Field Measurement of New Phased-array Focused Ultrasound新型相控聚焦超声声场测量实验研究
7.Linear Acoustic Analysis of Concave Sphere Dual-frequency Focused Ultrasonic Field凹球面双频聚焦超声声场的线性声学分析
8.The Study of High Intensity Focused Ultrasound in the Treatment of Uterine Leiomyoma;高强度聚焦超声治疗子宫肌瘤的研究
9.Experimental Study of Dosimetry of High Intensity Focused Ultrasound;高强度聚焦超声治疗剂量学实验研究
10.Image-Guided Targeting in Treatment Planning for Focused Ultrasound Therapy;聚焦超声治疗术前规划图像引导定位
11.Clinical Study on Focused Ultrasound Therapy in the Treatment of Chronic Cervicitis;聚焦超声治疗慢性宫颈炎的临床研究
12.Motion Control of the Probe of HIFU Treatment Machine;HIFU(高强度聚焦超声)探头的运动控制
13.Research of High Intensity Focused Ultrasound Tumour Treatment System;高强度聚焦超声肿瘤治疗系统的研究
14.Clinical study on the chronic cervicitis with the focused ultrasound;高能聚焦超声治疗宫颈糜烂179例分析
15.Observation the Effect of Focused Ultrasonic Treatment on Cervical Erosion;聚焦超声治疗子宫颈糜烂218例观察
16.Application of HIFU in Hepatic Carcinoma Therapy高强度聚焦超声在肝癌治疗中的应用
17.Curative effect of focused ultrasound treatment on chronic cervicitis (Report of 225 cases)聚焦超声治疗宫颈糜烂225例疗效观察
18.Investigation on effect of focused ultrasound on chronic cervicitis聚焦超声治疗慢性宫颈炎的疗效观察
相关短句/例句

sound focus声聚焦
1.Aiming at the potential problem of sound focus in this report hall, the technical methods brought up in the acoustical design are valid, and the results of field testing and subjective assessment show that satisfactory sound quality is obtained.吴江市高等职业技术学院报告厅是一个椭圆形的平面,针对可能出现的声聚焦问题,声学设计中提出的技术处理方法是有效的,现场测量和主观调查表明声学设计取得了满意的音质效果。
3)sound focusing声聚焦
1.Based on the reference[1],author presents and proves the sound focusing law for the hall,when the plan of the hall is a n regular polygon inscribed in a circle and the sound source is in the center of circle.本文以参考文献[1]为基础,提出和论证了平面为圆内接正多边形且声源位于圆心时的厅堂声聚焦规律。
4)Focused ultrasound聚焦超声
1.Focused ultrasound treatment of brain diseases;聚焦超声在脑部疾病治疗中的运用
2.A clinical study of application of coupling medium in focused ultrasound therapy for chronic cevicitis;耦合剂应用于聚焦超声治疗慢性宫颈炎的疗效
3.Evaluation of curative effects of focused ultrasound treatment for nonneoplastic epithelial disorders of vulva;聚焦超声治疗外阴上皮内非瘤样病变疗效评价
5)high intensity focused ultrasound聚焦超声
1.Quality control of the purified and degassed water apparatus in high intensity focused ultrasound treatment system;JC型聚焦超声肿瘤治疗系统介质水处理的质量控制
2.Objective:To investigate the efficacy and reliability of high intensity focused ultrasound treatment on chronic cervicitis.目的探讨聚焦超声用于治疗宫颈慢性的有效性及安全性。
3.Purpose To investigate the efficacy and reliability of high intensity focused ultrasound treatment on chronic cervicitis.目的 探讨高能聚焦超声治疗宫颈糜烂的有效性及安全性。
6)acoustic energy focusing声能聚焦
延伸阅读

固体声隔声  使用隔声材料或隔振装置,隔离或减弱建筑结构或管道系统噪声的措施。在固体物质中,声波传播的阻尼较小,固体声在建筑结构和管道中可传播很远。因此,必须在产生固体声的噪声源(或振源)附近采取措施,才能有效地隔离或减弱固体声。固体声噪声源有楼板的撞击声和建筑设备振动产生的声音。固体声的隔声措施分述如下。    楼板隔声 人在建筑物中活动产生的固体声,主要是由撞击楼板引起的。楼板固体声的隔声措施有:    ①建立浮筑地面。在地面板与承重楼板之间配置弹性垫层材料,如矿渣棉、玻璃棉毡和锯末等材料,使振源与承重楼板隔离开,从而降低固体声。这类构造适用于一般住宅、公寓和中小学校建筑,其典型构造见图1。      ②设置弹簧吊顶。在承重楼板下用金属弹簧或橡胶制品悬挂吊顶板,使地面板与吊顶板隔离,其构造见图2。这种方法造价高,施工较复杂,只适用于录音室(棚)、播音室和音乐厅等对隔声要求高的建筑。      ③铺设弹性地面层。在楼板表面粘贴沥青地面或铺设各种地毯,是隔绝楼板撞击声的简便有效措施,同时也符合机械化施工的要求,是今后解决楼板撞击声的方向。尼龙和羊毛短纤维粘结地毯价格低廉,隔声效果良好,一般可降低噪声30~50分贝。    建筑设备隔声  建筑设备中的通风机、冷冻机、水泵、电梯的变速电机和直流发电机等也是建筑中的固体声源,应采取相应的隔声措施(见建筑设备隔振)。    管道隔声  设置在房间内的设备管道是传递固体声的桥梁。其隔声措施可根据管内介质的类别、温度和压力,在管道相连处局部配置橡胶或不锈钢波形软管,软管长度以10倍管径为宜,并尽可能配置在垂直和水平两个方向上,这时软管长度在两个方向上各为5倍管径。图3为单向上配置750毫米长软管与双向各配置300毫米长软管隔声效果的对比。实践表明,双向配置的比单向配置的平均隔声量可提高1~1.5分贝。为提高管道隔声的效果,除中间局部设置软管外,在管道同屋顶和墙的固定处也用软连接。图4为JZ-610冷冻机的管道吊置在楼板上时,有、无隔离措施对楼上房间内噪声级的影响。由图可见,管道与吊架间衬垫泡沫塑料和刚性连结相比较,楼上噪声级平均下降6分贝。  建筑中的给水排水管道和暖气管道在穿过墙体和楼板时,用刚性连接也会传播固体声。隔声的方法是预埋套管并在管道和套管间填入沥青、麻丝类的隔振材料。卫生设备在与地面和墙面搭接处,可用油毡或橡胶条隔离,以减弱噪声。    参考书目   中国建筑科学研究院建筑物理研究所编:《建筑围护结构隔声》,中国建筑工业出版社,北京,1980。