飞行时间

基于CPLD的脉冲激光测距飞行时间测量

The Measurement of Flight Time for Pulsed Laser Ranging Based on CPLD

用同步辐射研究苯基氰分子的单光子电离与碎解，精确地测量它的电离势、在不同的飞行时间产生的自发的和亚稳态碎片离子的出峰电势（appearancepotential）。

Single photon ionization and fragmentation of benzonitrile is studied using synchrotron radiation . The ionization potential of benzonitrile , and the appearance potentials of spontaneous or prompt and metastable fragment ions for different flight time are measured precisely .

飞行时间大约需要三小时。

The flight takes approximately three hours .

由于顺风，飞行时间缩短了半小时。

A tailwind had cut the flying time by half an hour .

对于我们而言，我们已经开始用飞行时间作为非工作时间，因此该是沉浸在这段恢复期的时候了。

As for us , we 've started using our plane time as a work-free zone , and thus time to dip into the recovery phase .

飞行时间越长，这个强度要逐渐增大，只有这样才能够维持他们对抗失重的生理效应。

The intensity will gradually increase as their time in space progresses . It is only in this way that they can resist the physiological effects of microgravity .

空间站将在高度340至450公里的近地轨道运行，设计在轨飞行时间可达10年以上。专家表示，如果妥善维护，空间站的在轨飞行时间有可能超过15年。中国载人航天“三步走”战略

The station will operate in the low-Earth orbit at an altitude from 340 km to 450 km . It has a designed lifespan of 10 years , but experts believe it could last more than 15 years with appropriate maintenance and repairs .

利用飞行时间质谱进行蛋白质和多肽C端序列测定

C-terminal Sequencing of Protein and Peptide by MALDI TOF Mass Spectrometry

电喷雾-离子阱-飞行时间质谱联用研究黄酮和异黄酮苷元C环上的裂解规律

Fragmentation Study of the C Ring in Flavone and Isoflavone Aglycones by Electrospray Ion Trap Time-of-Flight Mass Spectrometry

激光烧蚀Al靶产生的等离子体信号的飞行时间测量

Time-of-flight measurement of electrical signals in laser-ablated Al target

激光电离飞行时间质谱法研究Al原子与卤代甲烷气相化学反应

Laser Photoionization TOF-MS Studies on Chemical Reactions of Laser Ablated Al Atom with Halomethanes

以2-氨基-5-硝基噻唑为基质辅助激光解吸/电离飞行时间质谱的有效基质分析DNA及蛋白质样品

Analysis of Oligonucleotide and Protein via Matrix-assisted Laser Desorption / Ionization Time-of-flight Mass Spectrometry Using 2-Amino-5-nitrothiazole as an Effective Matrix

CPLD在自触发脉冲激光测距飞行时间测量中的应用

Application of CPLD in time-of-flight measurement of self-triggering pulsed laser ranging

角分辨飞行时间法研究紫外激光烧蚀Ta2O5的反应

An Angle-resolved TOF Study on the UV Laser Ablation of Tantalum Oxide

考虑不同时刻引出离子的能量差异，给出离子的引出速度分布和真空传输14.5cm的飞行时间（TimeofFlight-TOF）分布。

The distribution of extracting velocity and time of flight ( TOF ) of 14.5 cm in vacuum of ions is given as considering the energy difference of extracting ions during the pulse .

本论文的核心主要是对塑料闪烁体型飞行时间计数器（TimeofFlight，TOF）的研究。

This dissertation is mainly focused on the study of Time-of-Flight ( TOF ) counter system made of plastic scintillator .

通过它们可以获得反应产物的飞行时间、ΔE和能量，从而达到粒子鉴别的目的。

The time , Δ E and energy signals of the reaction products were obtained , then the particles were identified .

采用碱性新基质2-氨基-5-硝基噻唑对DNA和蛋白质样品进行了基质辅助激光解吸/电离飞行时间质谱分析。

Using 2-amino-5-nitrothiazole as a matrix , the matrix-assisted laser desorption / ionization time-of-flight mass spectrometric study of oligonucleotide and protein was carried out .

角分辨飞行时间法研究GaAs（100）表面蚀刻反应动力学

A Kinetic Study of Chemical Etching of GaAs ( 100 ) Surface Using Angle-resolved TOF Method

设计并实现了基于CPLD的自触发脉冲激光测距的飞行时间测量系统。

A time-of-flight measurement system based on CPLD for self-triggering pulsed laser ranging is designed and implemented .

对裂变碎片探测器和中子探测器之间空气层及测量室的墙壁上散射的影响，用飞行时间方法进行了测量，也用MonteCarlo方法进行了计算，并对用两种方法得到的结果进行了比较。

The scattering by air and the walls of the measuring room was determined by both experiment and Monte Carlo simulation .

不同学历、不同飞行时间分组心理健康水平差异不显著（P>0.05）。不同年龄段、不同机种飞行人员的心理健康状况差异显著（P

But no differences in mental health were found among various academic degrees or flying hours ( P > 0.05 ), while there were differences among various ages or plane types ( P

方法：用纳升电喷雾四极杆飞行时间串联质谱的denovo测序方法进行测序。

Methods and Results : Peptides were sequenced by de novo sequencing method of nano_ESI_MS / MS.

针对DPF脉冲中子源产生中子脉冲的同时也会产生X射线脉冲的特点，采取了飞行时间法及吸收衰减法来消除X射线对中子脉冲的干扰。

To ensure the DPF source produce pulse neutron and X-ray simultaneously , it is essential to eliminate the X-ray 's interference .

直接将细胞色素C吸附在硝酸纤维素（NC）膜上，进行了基质辅助激光解吸电离－飞行时间－质谱（MALDI－TOF－MS）分析。

Cytochrome C absorbed on nitrocellulose ( NC ) membrane was directly analyzed by matrix assisted laser desorption ionization time of flight mass spectrometry ( MALDI TOF MS ) .

北京谱仪（BESⅡ）飞行时间测量修正的系统研究

Systematic Study of Time of Flight Correction of BES ⅱ

近年发展起来的表面增强激光解吸/离子化-飞行时间-质谱（Surfaceenhancedlaserdesorption/ionization-TimeofFlight-massSpectrometry，SELDI-TOF-MS）技术是一种新的蛋白质组学研究方法。

Surface enhanced laser desorption / ionization-time of flight-mass spectrometry ( SELDI-TOF-MS ) is a new method of proteomics developed in recent years .

BESⅢ飞行时间计数器1：1模型的束流测试

Beam Test for a 1:1 Module of Time of Flight Counter of BES ⅲ

BESⅢ飞行时间计数器刻度的模拟研究

Simulation study of the BES ⅲ TOF calibration

北京谱仪（BESⅢ）的飞行时间测量精度的一些影响因素的分析

Analysis of the Factors that Influence the Time Resolution of TOF in BES ⅲ Detector