This dissertation mainly involves two parts, theory analysis and experiment investigations for double-gap output cavity.

本论文对双间隙输出腔进行了理论分析和实验研究。

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Car sales in America and Europe are plummeting. American retailers, such as Neiman Marcus, J.C. Penney and Gap, reported double-digit falls in sales in the year to October.

美国和欧洲的汽车销售正在下滑，美国的零售商如内曼·马库斯、美国彭尼公司和盖普，到十月份为止的年度销售额出现了两位数的下跌。

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The gap is now around eight points and has only ever briefly been in double digits.

现在的差距是8个百分点左右，并且曾短暂地超过两位数一次。

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The poll also found rise in people who strongly favor stricter gun control, 44%, and a double-digit gap between them and the 32% who say they strongly oppose stricter gun control laws.

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The Mets allowed a run and cut off the relay after Jay's two-out RBI double to the gap in right-center.

WSJ: Cardinals get to Mets bullpen in 4-2 win

Yet this initiative, intended to provide a test bed that can double as a stop-gap defensive capability, is clearly inadequate.

CENTERFORSECURITYPOLICY: Center For Security Policy