proportionate sampling
按比例抽样法
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- purine n. [有化] 嘌呤（四氮杂茚，尿杂环）；咖啡碱
- therefore adv. 因此；所以
- Varney [人名] 瓦尼
- untransformed 未改变的
- touchscreen n. 触摸屏
- retry n. 重操作 vt. [计] 重试；重审
- insulin n. [生化][药] 胰岛素
- resell vt. 转售；转卖；再卖
- clumpy adj. 多块的；成块的；树木丛生的
- underage n. 缺乏 adj. 未成年的
- unrestricted adj. 自由的；无限制的；不受束缚的
- diversionary adj. 转换注意力的；牵制性的
- confederacy n. 联盟；联邦；私党
- washing n. 洗涤；洗涤剂；要洗的衣物 v. 洗；使受洗礼（wash的ing形式） adj. 洗涤用的，清洗用的
- trompe n. （熔矿炉的）水风筒
- Roddy [男子名] [爱尔兰姓氏] 罗迪 Ready的变体
- assimilation n. 同化；吸收；[生化] 同化作用
- noetic adj. 智力的；纯粹理性的；纯理智的 n. 知识分子；纯粹理性论；有智力的人
- thunderstruck adj. 遭雷击的；惊愕的；吓坏了的
- endearing adj. 可爱的；讨人喜欢的；引起爱情的
考试词汇表
- uncoated printing paper
- uncollided flux density
- uncollided neutron flux
- uncommitted array logic
- uncommitted logic array
- uncompensated alkalosis
- uncompensated amplifier
- uncompensated flowmeter
- uncompensated germanium
- uncompleted transaction
- unconditional branching
- unconditional discharge
- unconditional estimator
- unconditional liquidity
- unconditional selection
- unconditional stability
- unconditional statement
- unconditional surrender
- unconfined ground water
- unconfined seepage flow
