金属光阴极的热发射度由两部分构成。
Thermal emittance of metal photo-cathode mainly consists of two parts.
对红外加热器热发射率的标准参比涂料测试法作了简化。
The conventional method using reference paint for determining heat emittance of infrared heater is simplified.
实验表明,采用新方法对阴极尖端进行腐蚀后得到的尖端阴极,同样可保证热发射束流的稳定性要求。
Our experiments showed that it can ensure the same stability of thermal emission current by use of a new method of corroding cathode point.
美国宇航局的Terra卫星上的高级星载热发射和反射辐射仪(ASTER)分别于海啸前后拍摄到的上面两张伪色图像。
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite captured these false-color images before and after the tsunami.
美国航空航天局terra卫星上的先进星载热发射和反射辐射仪在2010年5月2日拍摄到这张罕萨河堰塞湖的假彩色图像。
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image of the landslide lake on the Hunza River on May 2, 2010.
6月1日,特拉卫星上的先进星载热发射和反射辐射仪(ASTWER)捕捉到这张堰塞湖伪色图像——这个湖现在长16公里。
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on the Terra satellite acquired this false-color image of the landslide lake on June 1, 2010 - now 16km (10 mi) long.
2009年11月22号,绕地卫星上的热发射和反射接受器捕捉到了这种蓝绿细丝状水藻旋转越过危地马拉的亚提特兰湖。
Terra's ASTER sensor captured this view of filaments of blue-green algae swirling across Guatemala's Lake Atitlán on November 22, 2009.
这张地形图根据由NASA(美国航空航天局)Terra号卫星上的先进星载热发射和反射辐射仪(ASTER)搜集的数字海拔高度数据制作而成。
The topography is from digital elevation data collected by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite.
这种图片由热发射和反射接受器研究小组(ASTER)在2009年6月发布,旨在推广这种目前保留了最全最准确地球数据的新型地球数据测量模型。
The ASTER team released this image in June 2009 to promote its new global digital elevation model, which remains the most complete and consistent data set of its kind.
2010年9月5日,美国国家航空航天局的“特拉”卫星上搭载的先进星载热发射和反射辐射仪Advanced Spaceborne Thermal Emission and ReflectionRadiometer,ASTER拍摄到一幅关于这两个水体的图片。
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite captured this image of the two water bodies on September 5, 2010.
内外层气体的碰撞产生了许多热的蓝色星体和粉红发射星云。
Collisions between gas in the inner and outer regions are creating many hot blue stars and pink emission nebula.
一些研究者已经开始制造依靠周围光、热、振动或电视发射机提供能源的设备。
Some researchers are already building devices that run on "ambient" energy harvested from light, heat, vibration or TV transmitters.
热的物体发射远红外线,当这种材料暴露在远红外线下,材料的电子发生振荡。
Hot objects emit infrared radiation, and the electrons in these metals vibrate when exposed to such radiation.
后来证实,航天飞机的外层热防护在发射时就被损坏,使得超热气体渗入机舱内,导致机毁人亡。
It later emerged that the spacecraft’s heat shield had been damaged on launch, letting superheated air inside and tearing it apart.
迫击炮弹爆炸的声响回荡在萨拉热窝上方的山上,摄影机镜头聚焦在一门发射时后冲的炮上,然后镜头伸向炮弹击中的地方,一条弧形白线越过城市上空掉落进一片房屋之中。
The camera focuses on a gun recoiling, then pans out to search for the impact point. A white line of smoke arcs above the city and ploughs into a group of houses.
日内瓦大学的物理学家热罗姆·卡斯帕里安说:“激光能持续发射,可以很好地瞄准,这样我们就不需要向大气喷洒大量的碘化银了。”
Physicist Jerome Kasparian, of the University of Geneva, said: "the laser can run continuously, you can aim it well, and you don't disperse huge amounts of silver iodide in the atmosphere."
航天器在地面待发射期间加空间实际飞行过程中,热控元件OSR要遇到各种地面和空间环境。
Thermal control material OSR's have to meet a variety of ground and space environments during ground storage and space flight of space vehicles.
于2009年发射入太空的WISE捕捉到了一些图像,可以显示出7.5亿星体、星系和其他小行星,其中包括小行星的热排放。
WISE, launched in 2009, snapped images of three-quarters of a billion stars, galaxies and other celestial objects, including the heat emissions of asteroids.
在纳米尺度也存在应力弛豫现象,其原因是热激活引起的位错发射和运动。
Stress relaxation has been observed on the nanoscale, which attributes to heat activated dislocation emission and motion.
提出了航空发动机防喘控制系统设计和研制方法,分析了当战斗机发射导弹时热扰动参数对发动机的影响。
The design and development methods of aeroengine anti-surge control system are presented. Effects of heat disturbance parameters on the engine are analyzed during missile launch.
介绍了一种用于热疗法中超声测温的双超声脉冲发射接收电路。
This paper introduces double ultrasound pulse transmitting and receiving circuits used in ultrasound thermometry.
本文利用热灯丝化学气相沉积法(HFCVD)制备了纳米量级的碳薄膜材料,对它的电学性质及场发射性质进行了详细的研究。
In this dissertation, extensive researches on the electrical and field emission properties of nano-carbon films prepared by hot filament chemical vapor deposition (HFCVD).
实验同时表明岩石热开裂的波速效应,与过去被其他作者发现的热开裂声发射效应之间有着密切的关系。
The experiments also showed that the effect of thermal cracking on wave velocity is related closely with that on acoustic emission discovered by other authors.
利用某些有机烷氧基金属化合物的热分解,可在玻璃、金属、陶瓷或半导体基片上沉积相应的金属氧化物次级发射膜。
A metal-oxide secondary emission film can be deposited on glass, ceramic or semiconductor substrates by thermal decomposition of an organo-metal alkoxide.
不论物体的温度有多低或多高,它们都发射出热射线。
All bodies emit heat rays no matter how low or high their temperatures are.
发射过程中的力学环境和在轨运行时的热环境,影响航天光学遥感器的尺寸稳定性,进而影响成像质量。
Dynamic environment in launching and thermal environment on orbit affect dimension stability of space optical remote sensor, thus declining its imaging quality.
在热介质中,受激的热胶子发射降低部分子的能量,而热吸收增加部分子的能量,其净贡献导致部分子能量损失的减少。
In the thermal medium, the stimulated thermal gluon emission reduces while absorption increases the parton's energy. The net contribution result in a reduction of the parton energy loss.
试验结果表明:NC、NG组成的双基粘合剂与固体添加物rdx在热分解特性上的差异是导致硝胺发射药燃速曲线转折的原因。
The results show that the crook of these propellants burning curves were caused by the difference of thermal decomposition behavior between the solid filler RDX and NC-NG double-base binder.
室外地面热辐射包括地表本身发射辐射和对太阳短波的反射辐射两部分,是组成室外热环境的重要因素之一。
The outdoor ground thermal radiation includes the emitted radiation and reflected solar radiation, and it plays an important role in the outdoor thermal environment.
论述用辐射热平衡法(热丝法)测量材料半球全发射率的原理;
The principle of measuring the hemisphere integrated radiant emittance by the radiation heat-equilibrium method (filament method) was discussed.
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