双管道摇摄允许在较小屏幕上查看放大版本的同时，在较大屏幕上使用高分辨率显示。

Panning allows a high-resolution display on a larger screen, while viewing a zoomed-in version on a smaller screen.

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而且，用电热管道代替双管掺水集油工艺，在节约天然气用量方面效果明显。

Moreover, substitute electric heating oil transportation for oil craft of activated water transportation of double pipelines, which can be benefit for economic nature gas greatly.

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