air-dried paper 风干纸
Air-dry paper: Hand-made and good machine made writing and brown paper, dried slowly by exposure to the air at a uniform temperature.
气干纸：手造纸，优质机制书写纸和褐色包装纸在平均温度下让空气把它吹干。
In this paper, the moisture content and its distribution of each growth ring in air dried wood specimens have been tested by using X-ray scanning densitometer.
用X射线扫描密度计测量气干材含水率及其每一年轮的水分分布。
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