n.position 1,000,000 in a countable series of things
2.
adj.the ordinal number of one million in counting order
常用词组
例句
1.
Quantum mechanics, on the other hand, deals with phenomena on extremely small scales, such AS a millionth of a millionth of an inch 另一方面，量子力学解决的问题是极小尺度里的现象，例如万亿亿分之一英寸。
2.
A unit of electric current equal to one millionth of an Ampere. 微安(培)等于百万分之一安培的电流单位
3.
FOR the use of million and millionth see examples at hundred and hundredth 关於million和millionth的用法见hundred和hundredth词条中的示例
4.
The centimeter - Gram - second electromagnetic unit of potential difference,equal to one hundred - millionth of a volt. 电磁伏特厘米－克－秒制势差的电磁单位，相当于亿分之一伏特
5.
A unit of pressure equal to one millionth of a bar. 微巴等于百万分之一巴的压强单位
6.
Each burst of waves lasts only about a millionth of a second 每个电波脉冲群仅持续约一百万分之一秒的时间。
小测验：选择正确的单词
词汇听力：
