This article introduced a kind of the main structure of hop picking machine and working principle and the test result of picking different hop flower with this picking machine.

介绍了一种啤酒花自动采摘清选机组的主要结构、工作原理及用同一套设备采摘清选不同品种啤酒花的试验结果。

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An economical fault detection method, employing cycle cover theory, is proposed in terms of costly sing-hop test module in meshed optical burst switching(OBS) networks.

针对光突发交换网状网中采用逐跳探测的故障监测方法监测成本过高的缺陷，提出了基于探测圈覆盖的故障监测机制。

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The computation and statistic results show that the proposed mechanism can reduce the cost of fault detection deeply compared to single-hop test scheme in meshed OBS networks.

计算和统计结果表明，该机制相对于逐跳探测机制能节约大量监测成本。

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Like Amazon, the company is secretive, but last September it revealed that it had lost an unmanned prototype vehicle during a short-hop test flight.

ECONOMIST: Brain scan

One team of innovators even helped the President hop onto a bike and test out their pedal-powered water filtration system.

WHITEHOUSE: Our Top Stories

We spend hundreds of hours on board a variety of airplanes each year, most often en-route to a trade show or product launch event, but occasionally we have a rare opportunity to hop on board military aircraft, to test out unrelated products, or, even more unusually, to take a seat behind the yoke.

ENGADGET: Lockheed Martin F-35 Lightning II stealth fighter cockpit demonstrator hands-on (video)