木材干燥应力是干燥过程中产生干燥缺陷的主要因素。
The drying stress is the main reason that causes the drying defects.
结果表明：梓木为难干树种，其主要干燥缺陷为内裂和截面变形；
The results show that: C. ovata is difficult to be dried, its main drying defects are the honeycomb and the cross section deformation.
结果表明：香椿木为较易干燥树种，其主要干燥缺陷为初期开裂和截面变形；
T. sinensis is easy to be dried, its main drying defects are the initial check and the cross section deformation; 2.
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