stratified sampling method
分层抽样法
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- arithmetic n. 算术，算法
- refrigerant n. 制冷剂 adj. 制冷的；冷却的
- Trafford n. 特拉福德（姓氏）；特拉福德（英格兰的一个都市自治市）
- FU abbr. 字段单元（Field Unit）；芬森单位（Finsen Unit）；流量单位（flux unit）；熔断器（fuse）
- tram n. 电车轨道；煤车 vt. 用煤车运载 vi. 乘电车
- earlier adj. 早的；初期的 （early的比较级） adv. 早地；早先的时候
- transferor n. [专利] 转让人，让与人
- closure n. 关闭；终止，结束 vt. 使终止
- fiddling n. 诈骗 adj. 无用的；无足轻重的；微不足道的（等于fiddly） v. 拉小提琴；虚度时光（fiddle的ing形式）
- potently adv. 有说服力地；强有力地；有效力地
- neckerchief n. 颈巾；围巾
- reasonable adj. 合理的，公道的；通情达理的
- noon n. 中午；正午；全盛期 n. (Noon)人名；(朝)嫩；(英、巴基)努恩
- virginian n. 弗吉尼亚州的人 adj. 维吉尼亚州的
- sanitise vt. 采取卫生措施使其安全；给…消毒（等于sanitize）
- unbranded adj. 未打上烙印的，无物主（姓名或标记）的
- Hounslow n. 豪恩斯洛区
- ret n. (Ret)人名；(捷)雷特 vt. 受潮湿腐烂；浸水使柔软 vi. 受潮湿腐烂；浸水使柔软
- thumbscrew n. 翼形螺钉，[机] 指旋螺钉；拇指夹（一种刑具）
- ludic adj. 顽皮的；好开玩笑的
考试词汇表
- as far as I can tell
- as far as applicable
- as far as i am aware
- as far as in me lies
- as far as in my lies
- as far as it will go
- as flat as a pancake
- as full as an a tick
- as game as Ned Kelly
- as good as they come
- as good as your word
- as grave as a an owl
- as handsome as paint
- as happy as a a clam
- as happy as a prince
- as hoarse as a raven
- as is now well known
- as is often the case
- as long as one's arm
- as mad as a meat axe
