num + megahertz
The CPU operates at 2.4 megahertz.
CPU以2.4兆赫运行。
兆赫
频率单位,等于每秒一百万次；每秒一百万周期；兆赫；[计] 兆赫兹
A unit of frequency equal to one million cycles per second.
频率单位,等于每秒一百万次
A unit equal to one million cycles per second.
每秒一百万周期
one million periods per second
This computer's processor runs at 2.4 megahertz, which is sufficient for basic tasks.
这台电脑的处理器运行速度为2.4兆赫，足以应对基本任务。
用法提示：句中'megahertz'作为名词，表示处理器时钟频率的单位，即每秒钟百万次周期。
The radio station broadcasts on a frequency of 88.5 megahertz.
这家广播电台以88.5兆赫的频率播出。
用法提示：句中'megahertz'作为名词，表示无线电波的频率单位，即每秒钟百万次周期。
The oscilloscope can measure signals up to 100 megahertz.
这台示波器可以测量高达100兆赫的信号。
用法提示：句中'megahertz'作为名词，表示信号频率的测量单位，即每秒钟百万次周期。
The CPU operates at 2.4 megahertz.
CPU以2.4兆赫运行。
用作复合形容词，通常有连字符。
A 5-megahertz clock signal is required.
需要一个5兆赫的时钟信号。
表示数量，后接不可数名词。
They need more megahertz of bandwidth.
他们需要更多的兆赫带宽。
megacycle是较老的术语，现在常用megahertz
grammar · medium
易错句子The clock speed is 2.4 megahertzes.
正确表达The clock speed is 2.4 megahertz.
megahertz 单复数同形，在数字后不应加 -s。错误地添加 -s 是受一般名词复数规则的影响。
grammar · medium
易错句子The processor runs at a 2.4 megahertz.
正确表达The processor runs at 2.4 megahertz.
当数字（如 2.4）明确表示数量时，不需要不定冠词 a。冠词与具体数字搭配使用是错误的。
兆赫（megahertz）是百万赫兹（hertz），而赫兹是基本频率单位，表示每秒周期数。
千赫（kilohertz）是千分之一兆赫，常用于调幅广播频率范围。
吉赫（gigahertz）是一千兆赫，用于微波和计算机处理器速度。
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