A single degree of freedom nonlinear sine sweep vibration test system was modelled.
建立单自由度非线性系统基础激励正弦扫描试验的数学模型,并针对多项式非线性阻尼与多项式非线性弹簧并联的橡胶隔振系统求解了数学模型。
By means of sine reduction method, short-time Fourier transform (STFT) and Wigner Distribution (WD), an experimental recorded signal induced by a sine-swept vibration test was analyzed.
以一个正弦扫描振动响应信号为例,分别应用常用的正弦约减法与短时Fourier变换和Wigner分布进行了对比分析,讨论了在正弦扫描振动激励下结构响应的时频分析问题。
Finally, according to the real conditions of sine-scan vibration test, simulation was accomplished by using the given algorithm.
最后,给出了正弦扫描试验仿真的算法并实现了振动台正弦扫描试验仿真。
positive emission tomography scan [PET scan]
正电子放射断层扫描
positron emission tomography
正电子放射层扫描术
You are about to calibrate your scanner. Please insert the calibration card face up, with the arrows pointing towards the scanner.
即将校正扫描仪。请插入校正卡，并保证其正面朝上，箭头指向扫描仪。
Image reconstruction of positron emission tomography
正电子断层扫描—PET的图像重建
Positron Emission Tomography and PET Image Reconstruction
正电子断层扫描仪与PET图像重建概述
High field magnetic resonance image scanning of the normal ankle joint
正常踝关节的高场强磁共振成像扫描
No scanner was found. Please make sure you have installed your scanner software properly, and then click Options to identify your scanner
没有找到扫描仪。请确认已经正确安装了扫描仪软件，然后单击“选项”来识别您的扫描仪
"Unable to access scanner device. Make sure scanner drivers are installed correctly, and no other scanning applications are running.
"无法访问扫描仪设备。请确定扫描仪驱动器安装正确，并且没有运行其它扫描应用程序。
Error setting scanner properties. If another program is scanning, please wait for it to complete and select "Scan" again.
扫描仪属性设置错误。若其它程序正在扫描，请等其完成并再次选择“扫描”。
Analog sweep
模拟式扫描(连续式扫描)
Digital sweep
数字式扫描(量化式扫描)
The following applications were running at the time the system snapshot was taken.
扫描系统的时候，下列应用程序正在运行。
Your scanner is being initialized, please wait a moment for the process to finish.
正在初始化扫描仪。初始化过程中，请稍候。
Setup is scanning your system for registered applications.
安装程序正在扫描系统，查看已注册的应用程序。
Network scanner is not available: currently being used for network copy.
网络扫描仪不可用: 当前正在用于网络复制。
Setup is scanning your system for available disk space.
安装程序正在扫描系统，查看可用的磁盘空间。
DYNAMIC ABERRATION CORRECTION IN A COMBINED SCANNING ELECTRON BEAM SYSTEM
复合的电子束扫描系统象差的动态校正