An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.

速调管一种用速度调节的方法放大或产生超高频率的电子管。

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In recent years, great achievements have been made in the design and construction of ultrahigh-rise buildings.

近年来超高层建筑的设计和建造取得了巨大的成果。

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The coating possesses high wear and cold-welding resistance and good electric conductivity both in atmosphere and in ultrahigh vacuum.

该镀层在大气或超高真空条件下具有良好的耐磨性、防冷焊性和导电性；

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So far, nobody has repeated my trial, although there are three more papers using ultrahigh doses of ARBs (Avapro, I believe).

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But Genentech had avoided aiming Herceptin at all patients with breast cancer, instead picking out only a small subset: the 25% of patients whose tumors contained ultrahigh levels of HER-2.

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In the late 1980s he found that 25% to 30% of breast tumors, including some of the worst cases, had ultrahigh levels of a gene called HER-2 and its protein.

FORBES: Targeting Tumors