The Smithsonian Astrophysical Observatory controls Chandra's science and flight operations from Cambridge, Mass.
马萨诸塞州坎布里奇（Cambridge）的史密松天体物理天文台控制着钱德拉的科研和飞行。
Aviation consultant Anthony Prakasam believes that the mass use of mobile devices onboard flights will also make passengers less demanding, meaning less cabin crew needed on each flight.
航空业顾问AnthonyPrakasam相信，机上移动设备的大量使用，将令乘客的要求降低，意味着每趟航班需要配备的机组人员将会减少。
Having initially connected the ornithopter using a DC power source, they realized that the device could lift 1.5 grams of payload, which was roughly the mass of the batteries required for flight.
起初给扑翼机接上一个直流电源之后，他们发现这个装置的有效载荷为1.5g，这大概可以勉强提起飞行所需的电池。
Paper airplane flight effect may be related to the mass, size and wing shape.
纸飞机的飞行效果可能与质量、大小、机翼的形状有关。
For this to be effective, it is necessary to keep the center of mass in normal flight directly below the center of pressure.
对，这是有效的，有必要保持中心的大规模正常飞行直接低于中心的压力。
When Obama's flight landed, a mass of people seemed to appear out of thin air.
当奥巴马的航班降落，人群好像是突然从空气中冒出来的一样。
A baseline vehicle is presented for the given flight mission, and the effects of the tank material, the thermal protection system and the design margin on the vehicle dry mass are calculated.
对给定的飞行任务，提出了基准运载器，并计算了贮箱材料、热防护系统及设计余量对运载器干质量的影响。
Time-of-Flight secondary ion mass spectrometry (TOF-SIMS) is a very sensitive surface analytical technique, well established for many industrial and research applications.
飞行时间二次离子质谱（TOF- SIMS）是一种非常灵敏的表面检测技术。
The conception of equivalent mass is introduced in the calculation of flight time and its physical meaning and mathematical implication are explained.
在飞行时间的计算中，引入了相当质量的概念，并说明了它的物理和数学的含义。
We study the dissociation channel and mechanism of anisole in the experiment using the time of flight mass spectrometer with the interaction of laser.
我们的实验是利用飞行时间质谱仪在激光作用下研究苯甲醚的多光子电离质谱能够得到苯甲醚分子的解离通道及机理。
Based on photoemission effect. we design a laser photoemission electron gun for electron impact ionization source of time of flight mass spectrometer.
基于光电效应原理。我们设计了一个新型脉冲激光光电子枪，它可以作为飞行时间质谱的电子碰撞电离的电离源。
In the model the exit area ratio, solid particle mass ratio, fuel enthalpy of combustion, jet gas molecular weight, chamber stagnation temperature, flight Math number etc. have been considered.
在该模型中考虑了底排出口面积比，排气固相颗粒质量比，燃料热值，燃气分子量，燃烧室总温，飞行马赫数等因素。
A new electron impact storage ion source has been designed for time of flight mass spectrometers with a high mass resolving power and high sensitivity.
电子轰击存贮型脉冲离子源是为高分辨率、高灵敏度飞行时间质谱仪设计的新型离子源。
The technique of coupling ultraviolet photoelectron spectroscopy (UPS) with time-of-flight mass spectrometry (TOFMS) is described.
本文报道了将紫外光电子能谱(ups)和飞行时间质谱(TOFMS)相结合的技术。
Based on the mass properties of each component of a flapping vehicle are generally measurable and constant we set up the corresponding equations of motion for flapping flight.
基于各部件质量的可测性且为常数的特点建立相应的扑翼运动方程。
A mass of complex and blended flight information can be displayed by Airborne Integrated display System to pilot, and it is the chief condition of flight training and fight.
机载综合显示系统能将大量、复杂、融合的空情信息，直观地显示给飞行员，为其完成飞行训练及作战任务提供首要的决策依据。
An aerosol time-of-flight mass spectrometer that can be used for real-time measurement of chemical compositions of individual aerosol particles had been designed and manufactured in our laboratory.
自行设计了国内第一台可实时测量气溶胶单粒子化学成分的气溶胶飞行时间质谱仪，并用该仪器对两类燃烧过程产生的气溶胶粒子进行了实时测量。
Using moderate resolution capabilities of a desk time-of-flight (TOF) instrument, the fragmentation regularity from electron impact mass spectra of vitexin was studied.
利用台式飞行时间质谱的中分辨本领，研究了牡荆素的电子轰击质谱的裂解规律，对裂解途径进行了完全的指认。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Using DSC-Coulometric Nitrogen Oxide Detector, Time of Flight Mass Spectrometer, the authors studied the thermal decomposition characteristics of HMX and its catalytic systems.
用DSC -库仑池联用仪和飞行时间质谱仪对HMX及其催化体系的热分解进行了研究。
Introduces the technology and principle of time-of-flight mass spectrometer-photodissociation ion imaging.
简述了飞行时间质谱——光离子成像技术的原理和设计。
A new system, micro-second pulsed glow discharge time-of-flight mass spectrometer, has been built up in our laboratory.
本文介绍了本实验室研制的瞬短脉冲辉光放电飞行时间质谱仪。
When the distance between the mass center of liquid and the mass center of flight vehicle is large, the influences to rocket flight ballistics become serious, which even induce flight instability.
当充液质心与飞行器质心的距离较大时，对飞行器弹道的影响较严重，甚至导致飞行不稳定。
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。
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。
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