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ultrasonic     
相关语句
  超声
     Experimental Study and Clinical Application of Tumor Ultrasonic Heat Therapy
     肿瘤超声热疗的实验研究和临床应用
短句来源
     Study on the Longitudinal-Torsional Ultrasonic Motor
     纵扭复合型压电超声马达的研究
短句来源
     Research on Pipe-Flow Measurement Based on Ultrasonic Doppler Methods
     基于超声多普勒方法的管道流量测量研究
短句来源
     Gene Transfer Mediated by Ultrasonic Destruction of Gene-loaded Microbubbles and Experimental Study of Antisense RNA Transfer Treated the Postinfarcation Heart Failure
     超声破裂载基因微泡介导基因转染及反义RNA转染治疗心力衰竭的实验研究
短句来源
     Welding Line Structure and Strength of Polymer Blend and Morphology Development in Presence of Ultrasonic Oscillation
     聚合物共混物融合缝结构与性能及超声振动下融合缝形态演变及其机理的研究
短句来源
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  超声波
     The Fundamental Study on the Ultrasonic Motor with Large Torque and High Precision
     大力矩高精度超声波电机的基础研究
短句来源
     Mechanism of Acoustic Levitation and Reducing Fraction Analysis and Basic Experimental Study on the Ultrasonic Bearing
     超声波轴承悬浮与减摩作用机理及基础实验研究
短句来源
     Study on Actived Alkali Lignin with Ultrasonic Process and Application of Multi-function Water Treatment Agent Based on Alkali Lignin
     超声波活化碱木质素及多效碱木质素水处理剂合成与应用研究
短句来源
     Study on the Principle and Relevant Technology of Ultrasonic Milling
     超声波铣削加工原理及相关技术研究
短句来源
     Study on Some Problems of the Hybrid Longitudinal-Torsional Ultrasonic Motor
     纵扭复合型超声波电机的若干问题研究
短句来源
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  超声图
     Collecting and Transmission of the High-speed B Ultrasonic Image Based on USB2.0
     基于USB2.0的高速B型超声图像的采集传输
短句来源
     The system has used ultrasonic video with image size of 512×512 and frame frequency of 15Hz .
     系统采用512×512大小、帧频15Hz的超声图像,以8MB/s的数据采集速率进行了图像的传输,满足了实时性的设计要求。
短句来源
     Color Doppler Ultrasonic Imaging Analysis on 85 Case s' Breast Masses
     乳腺肿块85例彩色多普勒超声图像分析
短句来源
     Methods The ultrasonic B images of 628 cases with ocular injury were analized and compared with their clinical data.
     方法 通过对628例(628眼)眼外伤的B型超声显像诊断,分析眼外伤的B型超声图像特征,并与临床资料对比。
短句来源
     A Study on Ultrasonic Image Construction With Fourier Transform
     Fourier变换重建超声图像的研究
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  超声的
     The ultrasonic velocities of Cr doped polycrystalline samples La0.7Ca0.3Mn1-xCrxO3(0.01≤x≤0.60)were measured under the temperature 300K by means of laser ultrasonic technology.
     运用激光超声的方法测定了五种不同掺杂的巨磁锰氧化物La0.7Ca0.3Mn1-xCrxO3(0.01≤x≤0.60)室温(300K)下的超声纵波声速.
短句来源
     The veracity of mammography, galactography and ultrasonic inspection was all under 50%(5/24, 12/24,8/24).
     而钼靶、导管造影和超声的诊断准确率均低于50%(5/24,12/24及8/24)。
短句来源
     Experimental results indicated that the extraction yields of sunflower seed oil using sub-critical carbon dioxide could be obviously enhanced by ultrasonic field. After extracting 240 minutes,extraction yields with ultrasound(100 W/L,4 s/6 s) and without ultrasound were 94.81% and 74.82% under 25 MPa,30 ℃ and 3 L/h,respectively.
     实验结果表明,超声场能够明显提高亚临界CO2萃取葵花籽油萃取率,在压力为25 MPa、温度为30℃、流速为3 L/h时,萃取240 m in后超声作用(100W/L、4 s/6 s)和未加超声的萃取率分别为94.81%和74.82%;
短句来源
     X-ray and Two-dimensional Pulse Doppler Ultrasonic Diagnosis of Fallot's Pentalogy(A Report of 10 Cases)
     法乐氏五联症的X线和二维脉冲多普勒超声的诊断(附10例报告)
短句来源
     The optimal condition with ultrasonic technique was 8:1 of 50% ethanol solution extracting for 1.5 hours and extracting thrice.
     超声的最佳提取工艺条件为A2B3C3D2,即为料液比1:8的50%乙醇超声时间1.5h,提取3次。
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  ultrasonic
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
Studies on injector pump-ultrasonic nebulizer feeding sample system for MPT-AES
      
A newly built injector pump-ultrasonic nebulizer combination feeding-sample system has been designed.
      
Preparation and characterization of silver colloids with different morphologies under ultrasonic field
      
In the ultrasonic field, stable silver colloids were produced by the reduction of AgNO3 with the protection of PVP using KBH4 or N2H4·H2O as reductant.
      
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This paper is a report of a preliminary survey on a new process of ramie yarn production. It includes six parts: Part Ⅰ, Mechanical Decortication: A new machine for decortication has been designed in the light of experiences of hand decorticating preraling in villages for years.. The quality of the fibre decorticated by this newly designed machine is satisfactory. Part Ⅱ, Chemical Degumming: A new process for degumming ramie fibre has been worked out. The recipe used is tabulated as follows:— Sodium Hydroxide……18...

This paper is a report of a preliminary survey on a new process of ramie yarn production. It includes six parts: Part Ⅰ, Mechanical Decortication: A new machine for decortication has been designed in the light of experiences of hand decorticating preraling in villages for years.. The quality of the fibre decorticated by this newly designed machine is satisfactory. Part Ⅱ, Chemical Degumming: A new process for degumming ramie fibre has been worked out. The recipe used is tabulated as follows:— Sodium Hydroxide……18 grms./per litre Lamepon A……6 grms./per litre Sodium Hydrosulphate……6 grms./per litre Bath Ratio……1: 20 The fibre is boiled under normal atmospheric pressure. The time may be shortened to 30 minutes, in case alkaline treatment is used. Part Ⅲ, The Ultrasenie Method of Washing and Stamping: When the ultrasonic method is adopted, it only takes 10 to 15 minutes to complete the washing and stamping process. It is also suggested that chemical and ultrasonic methods combined in treating the fibre may be practical as well. Part Ⅳ, Auto-circular Carding Machine: The possibility to increase the line yield about 50-60% by improving the existing machine is investigated. Part Ⅴ, Supper High Drafting System: A super high drafting system using four lines of rollers is designed and has been tested in a small scale with a draft of 98.7. The result is good. Part Ⅵ, Fibre Proprieties Change: The use of different chemical reagents in changing the fibre proprieties was described. By immersing the degummed fibre in a bath of 25° Be' NaOH at 30℃, the elongation rate of fibre treated is increased from 2.1% to 10.8%.

本文系綜合研究苧蔴新工艺的初步試驗报告。文中第一部份系根据我国麻农手工剝麻的試驗,提出新型剝麻机的設計方案。已制成的新型剝麻机剝麻質量良好。文中第二部份提出了化学快速脱膠的新配方,新配方的成分为: NaOH(100%) 18克/升 NaHSO_3 6克/升雷米邦A 6克/升浴比 1:20 根据新配方处理原麻,可在常压下进行煮練和汽蒸,碱处理时間可縮短至30分鐘。文中第三部份提出应用超声波来替代脫膠时的打洗过程,超声波作用时間为10~15分鐘,文中提出了煮煉与超声波同时作用的可能性。文中第四部份探討了自动圓梳机提高梳成率至50%的可能性。文中第五部份提出了四罗拉控制管式超大牽伸的設計方案,按設計方案改裝的超大牽伸裝置已經小样試驗,在牽伸倍数为98.7倍的情况下,成紗品質良好。文中第六部份系叙述用不同化学試剂对苧麻纤維变性的試驗情况,用25°Be′NaOH溶液处理精干麻5分鐘(溫度30℃),可使單纤維伸長率从2.1%增加至10.8%。

This is a preliminary experimental report in which various laboratory precedures are introduced and some of the results which appear somewhat very striking are interpreted theoretically. The consistent results made in a series of tests show that in degumming ramie fibre with the help of ultrasonic wave the best trial is made with the boiling solution of 4% of NaOH and 4% soap, in 5 minutes. The usual time-taking job of washing and stamping are not needed; however, the lustre, strength, and loosening of...

This is a preliminary experimental report in which various laboratory precedures are introduced and some of the results which appear somewhat very striking are interpreted theoretically. The consistent results made in a series of tests show that in degumming ramie fibre with the help of ultrasonic wave the best trial is made with the boiling solution of 4% of NaOH and 4% soap, in 5 minutes. The usual time-taking job of washing and stamping are not needed; however, the lustre, strength, and loosening of the fibre are superior to those from the current practices.

这是一篇实验室的初步試验报告。报告詳細介紹各种試驗方案的演变,并对試驗中发生的某些奇怪現象进行初步的理論探討。多次試驗确定在4%NaOH,4%肥皂的煮練液中用超声波处理5分鐘,得到最好的效果。煮練后的产品,不再需要打洗。精干麻在色泽、强力和纖維松散程度等方面均超过工厂成品。

The much discussed and controversial problem1) of ultrasonic absorption in ethyl and methyl acetates has been further investigated experimentally by the method of optical diffraction2) in progressive ultrasonic waves. In designing the equipment and throughout the measurement, special cares have been taken for the plane progressive nature of the ultrasonic field in the liquid trough, the elimination of stray light effect so that the receiver (a photomultiplier with preamplifier and a frequency...

The much discussed and controversial problem1) of ultrasonic absorption in ethyl and methyl acetates has been further investigated experimentally by the method of optical diffraction2) in progressive ultrasonic waves. In designing the equipment and throughout the measurement, special cares have been taken for the plane progressive nature of the ultrasonic field in the liquid trough, the elimination of stray light effect so that the receiver (a photomultiplier with preamplifier and a frequency analyzer connected in series) could respond with precision the relative light intensity of the first diffracted maxima at different stations along the ultrasonic beam, etc. Automatic recordings of sound absorption coefficients were made possible by the sound level recorder synchronized with the motion of the liquid trough. Several standard liquids have been tested; the absorption coefficients thus obtained agree well with commonly accepted values.

关于超声波在乙酸乙酯和乙酸甲酯中的吸收问题曾引起了多次热烈的争论,为此,作者采用了行波中的光衍射法做了进一步的实验研究。在实验过程中,特别注意了仪器的精确度问题,并且对许多种吸收系数已知的标准液体进行了多次重复的测量,结果很好地符合于一般的公认值,且误差不超出5%。 对于两种乙酸酯,测量的频率范围是3-30Mc,温度保持20℃。测量结果表明,在实验的误差范围内,吸收的实验值很好地落在唯象单弛豫理论所预期的曲线上,弛豫频率对乙酸乙酯约在12Mc附近,对乙酸甲酯约在7Mc附近。并且通过对不同纯度的乙酸乙酯进行重复的测量,表示杂质引起的附加吸收并不影响吸收曲线的特性。因此也就明某些作者测量得到两个弛豫频率的结果是不真实的。作者并认为Karpovich首先提出的旋转异构的理论是适合于解释这两种液体的驰豫吸收的机理的。

 
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