If we do not control energy demand, supply and demand gap will be gradually expanded.

如果不对能源需求加以控制，供需缺口将逐步扩大。

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By adjusting the axial position of the roller shelf and the pump body, gap between pressure-bearing pipes changes within a certain range, thereby the application scope of the pump head is expanded.

该蠕动泵通过调节滚轮架与泵体的轴向位置，使压管间隙在一定范围内变化。从而扩展了泵头的使用范围。

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The existence of hidden income has expanded the income gap remarkably, in our opinion.

FORBES: The Chinese Have $1.5 Trillion In Hidden Income

If anything, Social Security and Medicare should be expanded to cover the huge gap in retirement savings and health care coverage.

FORBES: Fiscal Cliff Follies: Four Myths

Developed at Wagner's request at a time when the technical capabilities of modern brass instruments were being expanded, it enabled him to fill a gap in tone color between the mellow lyricism of the horns and the penetrating brilliance of the trombones.

WSJ: It Takes Brass to Play the Wagner Tuba | By Barbara Jepson | The Ring of the Nibelung