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- main signal pulse sequence 主信号脉冲序列
- Signal in MR images is high or low (bright or dark), depending on the pulse sequence used, and the type of tissue in the image region of interest. 磁共振中的信号根据所用脉冲的顺序以及所要成像组织的类型分为高信号或第信号（亮或者暗）。
- Signal in MR images is high or low (bright or dark), depending on the pulse sequence used, and the type of tissue in the image. 磁共振中的信号根据所用脉冲的顺序以及所要成像组织的类型分为高信号或低信号（亮或者暗）。
- Laser Light-Scattering Event - A signal pulse that locates surface imperfections on a wafer. 激光散射-由晶圆片表面缺陷引起的脉冲信号。
- Laser Light-Scattering Event -A signal pulse that locates surface imperfections on a wafer. 晶锭-由多晶或单晶形成的圆柱体，晶圆片由此切割而成。
- LFM signal will likely become the main signal form in underwater target strength broadband test. 摘要线性调频信号可能将成为水下目标强度宽带测试的一种主要信号形式。
- In the second part, the basic theory of MRI, some basic concepts and the developing method of the pulse sequence are introduced. 第二部分介绍了核磁共振成像的基本原理、序列的有关概念及目前Resonance公司提供的序列开发平台编写序列的方法;
- The frequency domain profiles of DANTE pulse sequence are calculated according to the analytical solutions of Bloch equations. 根据 Bloch方程的解析解对 DANTE脉冲序列进行计算机模拟 .
- The effects of noncollinear angle and angular dispersion of signal pulse on the phase mismatching and parametric bandwidth are also discussed. 分别介绍了从可见光到近红外光选取合适的参数实现宽带运转的方法。
- Methods 59 patients with upper urinary tract obstruction were subjected to MRU performed in a heavily T2 weighted fast echo pulse sequence in the coronal plane. 方法59例上尿路梗阻性疾病患者接受检查，MRU为冠状位快速自旋回波T2加权像。
- When two counters of the Intel8253 work at mode 1 and mode 2 respectively,the pulse sequence can be programmed with the change of the pulse width and pulse period. 该方法利用8253芯片的两个计时计、数通道分别工作在方式1和方式2,通过软件编程改变脉宽和脉间的时间值产生脉宽、脉间可变的脉冲序列。
- The accuracy for detecting increased hippocampal signal intensity with different MR pulse sequences was FLAIR sequence(88.9%), SE (77.8%), FSE (62.2%), and proton density sequence(43.3%), in decreasing order of frequency. SE序列质子密度加权像判别海马信号强度增加的准确度最差（43.;3%25）； FSE序列次之（62
- The AHL biosensor detection revealed that three isolates produced AHLs molecules and strains FML05-1 and FML05-2 produced two types of AHLs at least and the main signal mole- cules were N-3-oxo-octanoyl-homoserine lactone(N-3-oxo-C_8-AHL). 利用AHLs检测菌株对3株假单胞菌进行检测发现,均产生AHLs类信号分子,且FML05-1和FML05-2至少产生两种AHLs,主要的信号分子是N-3-氧代-辛酰基-高丝氨酸内酯(N- 3-oxo-C_8-HSL)。
- The conversion efficiency of the average power is 4.2% from pump diode to OPO signal output and the signal pulse duration is about 13 times shorter than that of the depleted pump light. 实验中获得的由二极管注入泵浦功率至OPO信号光平均输出功率的转换效率达4.;2%25，信号光脉冲宽度比消耗后的泵浦光脉冲宽度压缩了13倍。
- We also described the main signaling pathways that regulate the microfilament cytoskeleton. 本文还对调节微丝骨架的主要信号传递途径进行了综述。
- A interception probability reduction theory by means of comparing the RPPM with constant PRI pulse sequence is also analysised in this paper, further more the strong properties of ECCM of the RPPM is discussed and analysised. 此外，本文还介绍了随机脉位调制信号比较于等重复周期(PRI)脉冲信号来降低信号被截获概率的原理，讨论并分析了随机脉位调制脉冲多普勒雷达较强的抗干扰能力。
- A interception probability reduction theory by means of substituting randomly staggered pulse sequence for constant PRI pulse sequence is analysised to improve the existence capability of radar in ECM. 为了提高雷达在电子对抗中的生存能力，分析了随机脉位调制信号取代等重复周期（PRI）脉冲信号来降低信号被截获概率的原理。
- The prophase interannual abnormality of the west wind drift area in north Pacific, black current, warm pool and India Ocean are the main signals of the Meiyu abnormality. 而前期北太平洋西风漂流区、黑潮、暖池附近及印度洋等海域的海温年际尺度的异常变化是夏季梅雨异常的主要信号区域。
- Data bits are allocated to the channels through a highly efficient modulation technique that converts digital data to electrical signal pulses. 数据通过一种高效的调制技术（即把数字数据变成电信号脉冲）分配给各个信道。
- The first part introduce the basic principle of Magnetic Resonance Imaging and the structure of MRI spectrometer, which includes pulse sequence generator and compiler, RF unit,receiver unit and pulse field gradient unit. 第一部分简单介绍了核磁共振成像的基本原理，以及MRI仪器的各个组成部分。 其中包括脉冲序列发生器、射频发射单元、接收机单元和梯度发生单元。
