If this load centroid is behind the elastic axis of the wing structure, then a nose-down twist of the main wing surface results.

如果该载荷重心在机翼结构弹性轴之后，则引起主机翼表面前端向下的扭转。

youdao

DBUnit is about maintaining database integrity across test runs (and in fact you can use DBUnit as part of the set up and tear down of your tests in Twist).

DBUnit是关于跨测试执行(test runs)去维护数据库完整性(事实上，在Twist测试中，你可以使用DBUnit作为测试初始化和运行结束的一部分)。

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Its wings not only beat up and down, but also twist at specific angles.

它的翅膀不但可以上下拍打而且能够在一定角度内翻转。

youdao

Its wings not only beat up and down, but also twist at specific angles.

FORBES: Festo Builds a Robot Bird

This comes ahead of a Dec. 11-12 meeting of the Federal Open Market Committee, which will be closely watched by investors to see what the Fed intends to do as the program known as Operation Twist winds down.

FORBES: Gold Market Expected To Focus On Greece, Fiscal Cliff, Fed Speakers Next Week

Operated by the Kempinski Hotel, 15 luxury ski chalets gaze over the slopes, allowing visitors to watch the bambi-on-ice skiers slip and slide down the slalom or applaud the smooth boarders as they twist and carve their way down.

BBC: Cool down in a Dubai ski chalet