double line的意思|示意

Duct extension. Supply or return duct can be specified. Single - or double - line ducts can be specified.

管道延伸. 可指定送风管道或回风管道.可以指定单线管道或双线管道.

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Drag onto the page, then right - click to specify single or double - line representation.

拖到绘图页上, 然后右击可指定为单线或双线表示.

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Magnetic core. Single or double line representation can be specified.

磁芯. 可以指定单线或双线表示.

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Double - line elbow connector with arrowheads and adjustable line spacing.

带箭头和可调线间距的双线肘形连接线.

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Magnetic core. Right - click for single or double line representation.

磁芯. 右击指定单线或双线表示.

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Return air duct section. Single - or double - line ducts can be specified.

回风管道部分. 可以指定单线管道或双线管道.

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