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木材中水份的数量称为木材含水量,以木材重量的百分率计算之。木材的含水量如按绝干重量为基数测定,称为绝对含水率;若按木材原始重量为基数测定,称为相对含水率。相对含水率所得的数值均小于100％。而绝对含水率,每因木材含有过多的水份时,所得的数值可大于100％,甚至于达到200％以上,其计算公式如下:
The amount of moisture in the wood is called the moisture content of the wood, calculated as a percentage of the weight of the wood. Wood moisture content, such as by dry weight as the basis of determination, known as the absolute moisture content; according to the original wood weight as the base measured, known as the relative moisture content. Relative moisture content of the resulting values are less than 100%. The absolute moisture content, each of the wood contains too much water, the value can be greater than 100%, or even reach more than 200%, which is calculated as follows: