ambient light
环境光
bounce off
反射出来
cell phone
手机
downward
adv. 向下
dust particle
尘粒
electromagnetic radiation
电磁辐射
This makes them ideal for long-distance travel, as neutrinos are undisturbed by gas, dust and other matter that can block radio waves and other types ofelectromagnetic radiation.
electronics
n. 电子技术
emit
v. 发出
They emit high frequency pulses of sound through their mouth or nose which bounce off surfaces and objects around them.
faintadj.
微弱的
illuminate
v. 照亮
interfere with
干扰,妨碍
Groups of reporters and admirers are often on hand to watch the event. There have been no attempts to interfere with the Toaster or to unmask him - most likely out of respect for the tradition.
interference
n. 干扰
He was reckoning without her mother's interference
irony
n. 讽刺意味的事
light pollution
光污染
light up
照亮
light wave
光波
molecule
n. 分子
nitrogen
n. 氮
observatory
n. 天文台
With a full-power observatory in place, that explanation, as well as a better explanation of high-energy astrophysical phenomena throughout the universe, may be available in the years to come.
optical astronomy
光学天文学
optical telescope
光学望远镜
Made with data from the Nordic Optical Telescope in the Canary Islands, the composite picture shows extended emission from the nebula.
Photon
n. 光子
radio astronomy
射电天文学
radio communication
无线电通信
Following the decision to digitize the battlefield, radio communicationequipment, night-vision goggles, and other electronic equipment become essential items in a foot soldier's backpack.
radio telescope
射电望远镜
Astronomers talk of placing a radio telescope on the moon's far side; energy experts want to mine the moon's helium 3, an isotope that could power clean-fusion reactors back on Earth.
radio wave
无线电波,射电波
If you hook a radio wave up with a radio, you can tell the radio wave was there because what the radio is doing?
remote control
遥控装置
satellite dish
碟形卫星天线
Scatter
v. 散开,散射
In this scenario, all the electrons eventually scatter during their long trip along the sandwich: the spin-up electrons from one iron layer and the spin-down electrons from the other.
signal
n. 信号
The only thing you should normally do inside a signal handler is set a global flag that will be processed later.
sophisticated
adj. 复杂精细的
Most of these are not suitable for sophisticated UI evaluation but can serve you well for simulation and analysis of performance.
technological advance
技术进步
unshielded
adj. 未遮盖的
water droplet
水滴