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Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.
EIR Equipment Identity Register 设备标识寄存器 EIR Excessive Information Rate 过大的信息速率 EIRP Effective Isotropic Radiated Power 等效全向辐射功率 EIS Electronic Information S
Die-hard advocates of alternate energy might fantasize about cars that could one day run on water. But scientists in India have gone a step further. Theyve mathematically modeled an engine that should allow a motorcycle to run on aircompressed air, t
智利学生研发另类充电设备 小小植物也能轻松为手机充电 Three Chilean students got the idea for a plant-powered device to charge their cellphones, while sitting in their school's outdoor courtyard during a break from exams, with
今天我们要讲几个在美国总统大选的竞选阶段常会用到的习惯用语。美国总统大选每四年举行一次。在大选年的前一年,准备竞争本党总统候选人提名的人士就已经在各州积极展开竞选活动了,
物理学 statics 静力学 motion 运动 inertia 惯性 gravitation 引力 relativity 相对 gravity 地心引力 vibration 震动 medium (media) 媒质 frequency 频率 wavelength 波长 pitch 音高 intensity 强度 echo 回声 resonance 回声,洪