除了装有轻巧的塑料信号镜、精心设计的哨子、可单手使用的打火石外，每个救生包中还有一个特种火源——即所谓的WetFire。
In addition to packing lightweight plastic signal mirrors, well-designed whistles and flints that can be used one-handed, each kit contains a special type of tinder called WetFire.
宇宙飞船的位置可以根据追踪它的无线电信号来确定，也可以用望远镜和雷达来确定。
A spaceship's position can be located by following its radio signal, or by using telescopes and radar.
为了避免干扰，保持望远镜的灵敏度，无线电望远镜被建在没有人为的无线电波或电子信号的地方。
To avoid interferences, and keep the telescopes sensitive, radio telescopes are built in places where there are no human radio waves or electronic signals.
据两位美国物理学家称，银河中心暗物质湮灭的这一设想，可以解释近年来两台空间望远镜探测到的信号。
Annihilating dark matter at the heart of the Milky Way could account for signals detected by two space telescopes, according to a pair of US physicists.
小型天文望远镜视场更广但是只能探测到较强烈的信号。
Small telescopes see a lot of sky but can detect only strong signals.
在蓝色背景上的明亮颜色表明在地球上收到了一个不寻常的信号，它来自于搜寻地外文明计划（SETI）的一台射电望远镜。
The bright colors on the blue background indicate that an anomalous signal was received here on Earth by a radio telescope involved in a Search for Extraterrestrial Intelligence (SETI).
理论上讲下一步应该是发射能够观测化学信号的望远镜，以为生命的存在提供依据。有价值的信号包括氧气、水蒸汽和二氧化碳。
The next logical step would be a space telescope capable of picking up the chemical signatures of life, including the presence of oxygen, water vapour and carbon dioxide.
位于北加州干旱高原上建造的艾伦望远镜阵列将天文学家所能探测到信号的恒星系统数量大大地增加了。
The construction of the Allen Telescope Array on an arid plateau in northern California greatly expands the number of star systems from which astronomers could detect signals.
费米太空望远镜对这些伽马射线脉冲很灵敏，以至于它甚至不需要调整位置对准雷暴的正上方，就能来探测TGF信号。
The Fermi Space Telescope is so sensitive to these gamma ray bursts that it doesn't even need to be positioned right over a thunderstorm to detect the TGFs.
该信号可以数字化，还可通过繁重的高性能计算转化成哈勃望远镜图像。
That signal can be digitized and transformed by the dull magic of high-performance computing into Hubble's images.
拍摄照片的是大熊湖太阳天文台新望远镜，采用自适应光学技术配件以便校正大气扰动误差，调节信号畸变。
The telescope that took the picture is know as the New Solar telescope which USES adaptive optics, parts that change to adapt to disturbances in the atmosphere and correct distortions in the signals.
这台计算机充当这个巨大的、分布式望远镜的焦点。该望远镜是历史上最大的实时望远镜，把位于世界各地多个设备采集的信号综合了起来。
This machine ACTS as the focus of the giant distributed telescope, the largest real-time telescope ever, combining the signals collected from instruments across the world.
大型的望远镜虽可以检测到微弱的信号，却只有很小的焦距。
Small telescopes see a lot of sky but can detect only strong signals. Large ones, which can detect weak signals, have a narrow focus.
在射电天文学里，比如粒子物理学里面，更大的配套元件会更好- - -一个更大的望远镜可以收集到较微弱的信号并产生更清晰的图像。
In radio astronomy, as in particle physics, bigger kit is better-a larger telescope can gather fainter signals and produce sharper images.
该出生日期是1979年4月，当时一位学校老师用望远镜发现了发出恒星塌陷信号的超新星爆炸，因为在M- 100星系那里有明亮的光亮。
That birth date is in April 1979, when the supernova explosion that signaled the collapse of the star was spotted flaring brightly in the M-100 galaxy by a school teacher using a telescope.
座落于夏威夷火山岛MaunaKea顶峰的这台天文望远镜，从该行星大气层中探测到了甲烷信号，而哈勃或斯皮策太空望远镜无法观测到这颗行星的大气层。
The telescope, which is perched on the summit of Mauna Kea, a volcanic island in Hawaii, picked up signs of methane in the planet's atmosphere that could not be seen by either Hubble or Spitzer.
这个20英尺射电望远镜阵列，分布在几英亩的区域上。 它们并不向太空发射信号，而是扫描宇宙搜寻地外的信号源。
The array's 20-foot-wide telescopes, spread across several acres, don't send messages into space but scan the cosmos for signals of extraterrestrial origin.
有一次，望远镜运行到埃及上空，却探测到了来自赞比亚，这个正南方1800公里远的地方的一片活跃的雷暴的TGF信号。
In one case, the telescope was orbiting over Egypt, but the TGFs it detected came from an active storm in Zambia, a good 1,800 miles south.
该团队仅两次瞥见了其中的一颗行星，所以他们用其他望远镜跟踪了这个微弱的信号。
The team had caught only two glimpses of one of those planets, so they followed up on the faint signals with other telescopes.
如果你用射电望远镜的话你就能得到射电信号。
And if you put radio telescope there you can get a radio signal.
在两个反射镜上安装光电探测器，使之转一周产生一个脉冲信号作为基准信号。
Fixed photoelectric detectors on the two reflectors, they produce a pulse signal as reference signal every round.
射电望远镜较常规望远镜有一显著优点。射电望远镜在各种气候条件下都能工作并能接收来自遥远的星球的信号。
Radio telescopes have a big advantage over conventional telescopes in that they can operate in all weather conditions and can pick up signals coming from very distant stars.
1977年，这个信号在一个望远镜输出文件中被发现了，它完全符合天文学家理论预测的外星人用来和外界联系的特征。
This signal, which looked exactly like the sort of thing astronomers had theorised aliens might use to get in touch was spotted in telescope printouts in 1977.
利用视频捕捉卡将电视关节镜输出信号转变为数字信号，使用计算机记录和保存采集的图像。
The TV arthroscope signal is turned into digital video signal through a video capture card, and then the digital signal is recorded and stored through a computer.
确保太阳镜不会扭曲颜色，并影响对交通信号灯的判断。
Be sure that your sunglasses don't distort colors and affect the recognition of traffic signals.
望远镜接收到的信息将由转播信号的一颗卫星转播到地球上。
A signal-relay satellite would transmit information from the telescope to earth .
混频器主结构采用两只对称的单平衡混频器组合，通过上下两路信号移相来达到消除镜频的目的。
The main structure of the mixer adopts two symmetrical single-balanced mixers, with phase-shifting of the up and down path signals to eliminate the image frequency.
混频器主结构采用两只对称的单平衡混频器组合，通过上下两路信号移相来达到消除镜频的目的。
The main structure of the mixer adopts two symmetrical single-balanced mixers, with phase-shifting of the up and down path signals to eliminate the image frequency.
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