second moment
un. 二阶矩量；二次矩
[网络] 二级动差；二阶动差；第二阶动差
热门查询
- Joplin 乔普林（地名, 美国城市）
- biochemical adj. 生物化学的
- modesty n. 谦逊；质朴；稳重
- whit n. 一点点；些微 n. (Whit)人名；(英)惠特
- factorial n. [数] 阶乘 adj. 因子的，阶乘的
- chao n. 钞（货币）
- bloodshed n. 流血；杀戮
- punctured adj. 具刻点的；被剌破的
- declension n. 词尾变化；变格；倾斜；衰退
- beachhead n. [军] 滩头堡，滩头阵地
- earless adj. 无穗的；无耳的；听觉不佳的
- potato n. [作物] 土豆，[作物] 马铃薯
- extinguished v. 熄灭；灭绝（extinguish的过去分词） adj. 熄灭的；灭绝的
- acne n. [皮肤] 痤疮，[皮肤] 粉刺
- search n. 搜寻；探究，查究 vt. 搜索；搜寻；调查；搜查；探求 vi. 搜寻；调查；探求 n. (Search)人名；(英)瑟奇
- sunyata n. 空性，空
- complacence n. 满足，自满；沾沾自喜
- daybreak n. 黎明；破晓
- emerson n. 爱默生（Ralph Waldo Emerson 美国思想家，诗人）
- reestablishment n. 恢复，重建
考试词汇表
- digital spectrophotometer
- digital spectrum analyzer
- digital stepping recorder
- digital storage equipment
- digital store with diodes
- digital subscriber filter
- digital survey fathometer
- digital switching devices
- digital system impairment
- digital telephone network
- digital television camera
- digital television system
- digital temperature meter
- digital time delay filter
- digital to a.c. converter
- digital transfer function
- digital transmission path
- digital type torque meter
- digital video arteriogram
- digital video compression
