木材干燥就是要排除木材中的水分。

The purpose of wood drying is to extract water from wood.

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在微波真空干燥过程中，就整个板材而言，热扩散效应对木材中水分迁移的影响不大，但在局部的有限范围内，它对自动平衡木材内含水率具有显著的作用。

During the drying process of MV, for the whole board, the effect of thermal diffusion on moisture movement is not significant, but it can cause a leveling of moisture profile in a local range of wood.

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矿物、木材、茶叶、粮食、药品、食品等加工、生产和保存过程中，都要求水分含量保持在一定的范围内。

The moisture content must maintain in certain scope in processing, production and preserved process of mineral, lumber, tea, grain, drugs, food and so on.

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