MRA used 3 dimensional time of flight method and demonstrated the intra cranial arteries with the maximum intensity projection (MIP) of the source images.
MRA 检查采用三维时间飞跃法,对源图像做最大强度投影重建血管影像。
In addition, the ion energy of HPIB is also measured with Thomson spectrometer and time of flight method and the results agree with those measured with a pile of thin films.
还将叠片法的测量结果与利用磁谱仪和采用飞行时间法等的测量结果进行了比较,三种方法所得的测量结果基本一致。
Since the flight test data are of time domain, it needs to be converted into frequency domain by FFT method. Then it can be used to identify the system.
由于飞行试验数据是时域数据,使用这种方法需要使用FFT的方法将实测的时域数据转换成频域数据后再进行辨识。
The basic model and the experimental measurement method of short-distance time-of-flight absorption spectra for determining the temperature of cold atoms are described.
详细介绍了短程飞行时间吸收谱测量冷原子温度的基本模型和实验方法。
Through analyzing all data of a flight control real-time software with high data coupling and concurrent processing, a new data coupling analysis method for real-time software is proposed.
以软件中数据为核心,通过分析一个具有高度数据耦合、实时并发进程特点的武器装备飞行控制软件实例,提出一种实时软件数据耦合影响分析方法。
In this paper, a new method for dynamic measurement of engine exhaust using TOFMS (Time of Flight Mass Spectrometer) is presented, and a high speed data acquisition system is designed.
本文介绍了利用飞行时间质谱仪(TOFMS)对发动机发动过程中的排气成分进行动态检测的方法以及为此开发的高速数据采集系统。
A new efficient real - time flight path reconstruction method of the longitudinal aircraft motion is presented in this paper.
提出一种有效的实时纵向飞行轨迹重构的新方法。
Time of flight diffraction (TOFD) was summarized as a new nondestructive testing method. The present seven main TOFD standards in the world were evaluated and compared in twelve different portions.
概述了超声波衍射时差法(TOFD),对目前世界上主要的七个TOFD检测标准或规范进行了分析和比较,归纳了其中十二个方面的异同点。
Compared with traditional design optimization method, MDO method can gain the optimum design for flight vehicle as well as the optimum thrust-time curves of booster.
与传统设计优化方法相比,MDO方法一次设计优化就可得到满足飞行器总体设计指标的最优设计,得到内外弹道相匹配的助推器最优推力-时间曲线。
The study of the influence of neutron scattering by the surrounding medium and fragment detector on fission neutron spectrum measurement with time-of-flight (TOP) method has been carried out.
介绍了用飞行时间方法测量裂变中子谱时中子在裂变碎片探测器上和周围材料上散射的影响。
The coincidence efficiency was investigated. This measurement can be used to analyze absolute content of gas atom, even of isotopes. This method is more reliable than the Time-Of-Flight spectra.
根据实验参数进行了符合效率计算,该实验方法可用于微量气体元素甚至同位素的绝对含量分析,较单独的飞行时间谱更加可靠。
The coincidence efficiency was investigated. This measurement can be used to analyze absolute content of gas atom, even of isotopes. This method is more reliable than the Time-Of-Flight spectra.
根据实验参数进行了符合效率计算,该实验方法可用于微量气体元素甚至同位素的绝对含量分析,较单独的飞行时间谱更加可靠。
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