backward-wave tube
un. 回波管；返波管
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- whirl n. 旋转，回旋；昏乱；一连串的事；短暂的旅行 vt. 使旋转；卷走，飞快地带走 vi. 旋转，回旋；急走；头晕眼花
- Whitchurch n. (Whitchurch)人名；(英)惠特彻奇
- honeybee n. [蜂] 蜜蜂
- acculturate vt. 使适应文化；使适应新的文化习俗 vi. 适应文化；适应新的文化习俗
- ensure vt. 保证，确保；使安全
- Lucien [人名] 卢西恩
- Howden [人名] [苏格兰人姓氏] 豪登住所名称，来源于古英语，含义是“隐匿处+河谷”(nook,recess+valley); [人名] [英格兰人姓氏] 豪登住所名称，来源于古诺斯语，含义是“头，顶，端+河谷”(head+valley); [地名] [英国] 豪登
- singable adj. 可唱的
- unconfirmed adj. 未证实的；未最后认可的；未受坚信礼的
- hippy n. 嬉皮士
- ostensibly adv. 表面上；外表
- selfishness n. 自私自利；自我中心；任性
- providential adj. 幸运的
- pelf n. 钱财；不义之财，赃物
- keystone n. 主旨，基本原则；[建] 楔石
- exultation n. 狂喜；得意（等于exultance，exultancy）
- cinematically adv. 用电影方式；从电影角度看
- empty n. 空车；空的东西 adj. 空的；无意义的；无知的；徒劳的 vt. 使失去；使…成为空的 vi. 成为空的；流空
- accountant n. 会计师；会计人员
- briefer adj. 更简短的（brief的比较级） n. 情报官
考试词汇表
- under ceratin circumstances
- under certain circumstances
- under controlled conditions
- under favourable conditions
- under flow (in calculators)
- under her vine and fig tree
- under his vine and fig tree
- under laboratory conditions
- under obligation to someone
- under our vine and fig tree
- under the administration of
- under the charge of someone
- under the cloak of legality
- under the instructions from
- under the wing s of someone
- under water setting coating
- under-compounded DC machine
- under-discharged bankruptcy
- under-driven buhrstone mill
- undercarriage for apparatus
