ambient light
環(huán)境光
bounce off
反射出來
cell phone
手機
downward
adv. 向下
dust particle
塵粒
electromagnetic radiation
電磁輻射
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. 電子技術
emit
v. 發(fā)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
干擾,妨礙
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. 干擾
He was reckoning without her mother's interference
irony
n. 諷刺意味的事
light pollution
光污染
light up
照亮
light wave
光波
molecule
n. 分子
nitrogen
n. 氮
observatory
n. 天文臺
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
光學天文學
optical telescope
光學望遠鏡
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
射電天文學
radio communication
無線電通信
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
射電望遠鏡
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
無線電波,射電波
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
遙控裝置
satellite dish
碟形衛(wèi)星天線
Scatter
v. 散開,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. 信號
The only thing you should normally do inside a signal handler is set a global flag that will be processed later.
sophisticated
adj. 復雜精細的
Most of these are not suitable for sophisticated UI evaluation but can serve you well for simulation and analysis of performance.
technological advance
技術進步
unshielded
adj. 未遮蓋的
water droplet
水滴