The canvas covering the plates is easily penetrated by oil, but is impenetrable to the wax, so that the oil drips down from the canvas into a trough beneath the press.

盖着帆布的板很容易被油穿透，但石蜡不能穿透，这样，油就从帆布滴至压滤机下面的槽内。

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A protective rooflike covering, often of canvas, mounted on a frame over a walkway or door.

一个保护性的屋顶状遮蔽物，常用帆布制成，置于一个走廊或门的架上。

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Niubi Newbie Kids II will feature 19 up and coming talents, covering a diverse medium from oil on canvas to mixed media installations.

新兵之二将会展出十九位新进艺术家的作品；其作品包括不同的媒体：由油画到装置媒体都有。

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With the canvas' nine separate blocks covering such things as resources, value propositions, customer relations, cost structure and revenue streams, it captures the complete essence of a business plan.

ECONOMIST: Innovation