Twisting arises in boards through the presence of spiral or interlocking grain . 翘曲多发生在螺旋或交错纹理的板材中。
Saw and planer not work well because of interlocked grain . used for thick plywood , furniture , package , truck beds ( substitute for keruing ) and pallets 由于交错木理存在?锯切或刨削此种木材不易?主要用在合板旋切厚单板?箱板材?货车地板?纸浆材。