sample variance
un. 采样方差；采样离散
[网络] 样本方差；样本变异数；样本变异数公式
热门查询
- among prep. 在…中间；在…之中
- repeatedly adv. 反复地；再三地；屡次地
- irate adj. 生气的；发怒的
- inquisitorial adj. 严格审问的；好询问的；询问者的
- unrelated adj. 无关的，不相干的
- haughtily adv. 傲慢地；骄傲地
- rudderless adj. 无舵的；无指导者的
- twofer n. 可半价优待的两张戏票
- OP abbr. 观测所（Observation Post）；绝版（Out of Print ）；操作员（Operater） n. (Op)人名；(朝)业；(柬)奥
- bleak adj. 阴冷的；荒凉的，无遮蔽的；黯淡的，无希望的；冷酷的；单调的
- unilaterally adv. 单方面地
- laundromat n. （美）自助洗衣店
- rumen n. 瘤胃（反刍动物的第一胃） n. (Rumen)人名；(塞、保)鲁门
- ubiquinone n. [生化] 泛醌；辅酶Q（等于coenzyme Q）
- earache n. 耳朵痛，耳痛
- unrolled vt. 展开，铺开；显示 vi. 显露；展现
- precautions n. 防范；预防措施；预警（precaution的复数）
- Wootton 伍顿（人名）
- punchcard 穿孔卡（旧时把信息打成一排排的小孔，用以将指令输入计算机等）
- hurried v. 催促；匆忙进行；急派（hurry的过去分词） adj. 匆忙的；草率的
考试词汇表
- buzzword compliance
- by a hair's breadth
- by adding materials
- by admission of air
- by all appearance s
- by all that's blue!
- by artificial means
- by authority of law
- by compound casting
- by corona discharge
- by day and by night
- by electric devices
- by guess and by god
- by hook or by crook
- by leaps and bounds
- by lesps and bounds
- by mechanical means
- by mutual agreement
- by one's bootstraps
- by one's own lights
