megacycle

megacycle ^{n. one million cycles 兆周}

• The radio station broadcasts at 98 megacycles. ^{这个广播电台以98兆周的频率广播。}
• This device operates at several megacycles. ^{这个设备以几兆周的频率运行。}
• The old manual still uses the term megacycle instead of megahertz. ^{这本旧手册仍然使用兆周而不是兆赫这个术语。}

megahertz ^{n. one million cycles per second, used especially as a radio-frequency unit 兆赫}

• Zap a hydrogen atom and it will resonate at a particular rate: 1420 megahertz (MHz). ^{轰击氢原子可以与某一特定的频率产生共鸣: 1420兆赫。}
• Initially RFID tags worked only at frequency bands of 13.56 megahertz or lower. ^{早期的射频识别标签只能在13.56百万赫兹或更低的频率下作用。}
• A few years ago people buying computers only looked at megahertz, or how many gigahertz, and so on. ^{几年前，人们购买电脑只能看着兆赫，或者有多少千兆赫，等等。}
• Quartz crystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz. ^{加工成型的石英晶体的频率可从几十千赫兹到数百兆赫兹。}

“mega” = million ；“mega(lo)” = large

• megacycle ^{“mega” = million “cyc” = ring n. 兆周}
• megahertz ^{“mega” = million “hertz” = 赫兹（每秒一周）n. 兆赫}
• megabyte ^{“mega” = million “byte” = 字节 n. 兆字节}
• megavolt ^{“mega” = million “volt” = 伏特 n. 百万伏特，兆伏}
• megawatt ^{“mega” = million “watt” = 瓦特 n. 百万瓦特，兆瓦}
• megaton ^{“mega” = million n. 百万吨，百万吨级}
• megastore ^{“mega” = large n. 大型商店}
• megastar ^{“mega” = large n. 巨星，大明星}
• megalith ^{“mega” = large n. 巨石}
• megaphone ^{“mega” = large “phone” = sound n. 扩音器}
• megalomania ^{“megalo” = large “mania” = 狂热 n. 自大狂，妄自尊大}
• megalopolitan ^{“megalo” = large “polit” = city adj.  大都市的}