The first F-35B short takeoff/vertical landing stealth fighter operates in vertical-landing mode on a special "hover pit" at Lockheed Martin in Fort Worth, Texas, during an April test.

4月，洛克希德·马丁公司沃斯堡工厂的“悬停坑”对首架短距/垂直起降F-35B隐形战斗机的垂直着陆方式进行测试试验。

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That test gave us a 52% improvement in conversion rate from the pro landing page.

该测试中PRO landing page的转化率提升了52%。

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Any Facebook user can sign up for Deals notifications on the feature's landing page now; users in the five test cities should be able to see and use Deals.

任何Facebook用户现在都可以在Deals的登录页面上进行注册。在上面个城市中的用户可以看到和使用Deals。

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They wanted to test the landing module near the moon.

VOA: special.2009.07.08

The next step was to test the lunar landing craft.

VOA: special.2009.07.08

Indeed, the current prototype, which was unveiled earlier this month and is due to take off in April, will test only the landing system.

ECONOMIST: On a rotor-blade and a prayer | The

Similarly, the origins of the microwave oven (an offshoot of radar), the folding baby buggy (the brainchild of a test-pilot inspired by aircraft landing gear) and traffic lights (one of the first of which exploded outside the Houses of Parliament) are not widely known.

ECONOMIST: Encapsulating a century in gadgets

In previous incidents, one of the 787 test flight aircraft lost primary electrical power in 2010 and was forced to make an emergency landing in Texas.

CNN: Airline: Dreamliner fuel leak due to an open valve