It was my last day on the bone marrow transplant unit, back when I was an intern. As I stood before the patient, taking her history, she told me she had been a painter and suggested I look up her work on the Internet. 那是我在骨髓移植科实习的最后一天,我与一个患者闲聊,她告诉我她是个画家,并建议我去上网看看她的作品。
And then, on the basis of spectral analysis to the transmission signal to obtain the relationship between slot depth and the absorption frequency. 对透射波的信号进行了处理,得出裂纹深度和吸收频率的对应关系。
Adding the airspace can improve the sound absorption properties under low frequency. 增加空腔可以提高材料在低频的吸声性能;
First Harmonic Saturated Absorption Frequency Stabilization of Lasers Using Sampling Integration Technique 利用取样积分实现激光饱和吸收一次谐波稳频
Aiming at compensating the absorption and attenuation of seismic signal, the paper anew establishes the relationship about absorption coefficient and Q-value, and brings forward a time window method that is base on reverse Q-value to compensate strata absorption and attenuation in frequency domain. 针对地震信号的吸收衰减补偿问题,在重新建立吸收系数和Q值关系的基础上,提出了一种基于反Q补偿的分时窗频域吸收衰减补偿方法。
Particular attention was paid to promote the novel properties of stealthy materials, such as strong absorption, wide frequency band, light mass, thinness, multifunction, compatible absorption from infrared to microwave, and other predominant integrative properties. 新一代吸波隐身材料要求具有吸收强、宽频带、质量轻、厚度薄、功能多、红外微波吸收兼容以及优良的其它综合性能。
The extract of absorption information using frequency spectrum ratio method 用频谱比法提取衰减吸收信息
Studies on Power Absorption of High Frequency Electromagnetic Waves in Partially Ionized Plasma Layer under Atmosphere Conditions 高频电磁波在大气等离子体层中的传播和吸收的研究
Integrated analysis of these results is helpful to strati-graphic interpretation, the analysis of absorption and frequency dispersion, the identification of multiple reflection, and so on. 综合对比这些结果,可用于地层岩性解释、分析吸收和频散作用、以及分辨多次波等。
The Resonant Absorption Frequency of White Rats in Near Field of RF Radiation 近场射频辐射条件下大白鼠共振吸收频率的研究
The mathematical model of linear absorption frequency stabilization is established. 根据FM光谱通过吸收介质后,经检测、相干解调的理论分析,建立了线性吸收稳频的数学模型;
The numerical synthetic record and hodograph clearly show rich wave field, S-wave splitting, attenuation or absorption of amplitude and frequency in the anisotropic medium. 数值模拟记录及矢端图表明,记录上波场丰富,横波分裂以及振幅和频率在各向异性介质中的衰减、吸收等现象清晰可见。
Absorption curves were drawn for different load resistances, of absorption coefficients versus frequency. 更以吸声系数的频率曲线以进行详细比较。
Meanwhile, the average transmission loss increases to 23 dB, and the average sound absorption coefficient increases 0.7. So the structure has obviously improved the sound absorption performance, it and the purpose is realized of broadband resonance sound absorption of low frequency. 与此同时,平均消声量增加了23dB,平均吸声系数增加了07,明显改善了吸声性能,可满足实际工程需要。
Moreover, infrared spectra of films shows a stable oxygen content and a shift of Si-O band absorption peak to higher frequency with increasing annealing temperature. 而从膜的红外吸收谱测量表明膜中含氧量基本不变,但Si-O键吸收峰随着退火温度的升高向高频方向移动,并且愈益接近SiO2的红外吸收谱。
Study on~( 133) Cs Saturated Absorption Frequency Stabilization of ECDLs by AOM Frequency Shift/ Modulation 声光偏频~(133)Cs饱和吸收半导体激光器稳频技术的研究
A method to compensate strata absorption and attenuation in frequency domain 一种频域吸收衰减补偿方法
The coefficients of absorption also increase with frequency. 吸收系数在0.2&1.2THz随频率的增加而增大。
The infra-red absorption frequency and the vibration strength of an organic molecule depend on the force constant of its specific chemical bond, while the force constant concerns the way in which the electrons are distributed in the molecule. 有机化合物分子对红外光吸收频率和振动强度决定于功能团化学键的力常数,力常数与分子中电子分布有关。
The design of division widens the absorption frequency band in all band ( 2~ 18GHz). 利用分块设计的方法可以拓宽吸波材料在全波段(2~18GHz)范围内的吸收频带;
There are some differences between experimental value and calculated value for the laser lines atmospheric attenuation coefficients due to the difference between resonance absorption frequency of water vapor and laser emission frequency and the use of Lorentz line profile in the calculation. 各谱线大气衰减系数的实验值和相应的计算值之间存在着不同程度的差异,是由于水汽的共振吸收频率和激光发射频率之间的差异以及计算时采用Lorentz线型所引起的。
Proper interface polarization of the material will enlarge the wave absorption frequency and improve the wave absorption performance. 合理利用材料的界面极化,可使材料的吸收频带大大加宽,提高材料的吸波性能。
On making the synthetic VSP record including absorption and frequency dispersion 制作包括吸收和波散效应的VSP合成记录
When the capacitive patches were filled in the triangle apertures, the effective bandwidth decreased, but the effective absorption in low frequency was partly improved. 结果表明:将容性贴片填至三角缝隙中,虽然有效带宽有所降低,但在一定程度上可以实现对低频区域电磁波的吸收。
EDTA leaching of soil leaching and non-FT-IR spectra shows that the cultivation of plant functional groups in the area of soil strength was significantly weakened, and in the fingerprint area of the different treatments did not produce a new characteristic absorption frequency, but the intensity changed significantly. EDTA淋洗和未淋洗土壤的FT-IR谱图表明种植植物的土壤在官能团区强度明显减弱,而在指纹区各不同处理均没有产生新的特征吸收频率,但强度有明显改变。
The near infrared spectroscopy mainly produced by molecular vibration frequency within the group absorption and frequency absorption harmony, and only hydrogen-containing functional groups such as C-H, N-H, S-H, and O-H 'stretching vibration can be detected. 近红外光谱主要由分子内基团振动的倍频吸收和合频吸收产生,只有含氢官能团如C-H,N-H,S-H和O-H的伸缩振动才能被检测到。
Through the design of double-layer microwave absorption materials, the modulation mechanisms of absorption frequency band and impedance matching characteristic for different types of attenuation materials were investigated. 双层设计探索了不同损耗类型的吸波材料在吸收频带和阻抗匹配特性方面的调控规律。
Result: There are some differences between absorption frequency and relative intensity. 结果发现不同产地的苹果红外吸收频率、相对强度存在一些差异。
For ACF felt screen composites, combination element provided a design idea for increasing the effective absorption in low frequency. 因此,组合单元型为碳毡电路屏复合材料在低频区域的有效吸收提供一定的设计思路。