十字格;
Test Research on Constant Amplitude Fatigue Behavior of Grid Structure with Crossed Plate-welded Hollow Spherical Joints
平板网架结构十字板&焊接空心球连接常幅疲劳性能的试验研究
Any city crossed by a rectangular grid can identify days where the setting sun aligns with their streets.
只要有棋盘式道路的城市,太阳照射轨迹与街道对齐,就能得知今天是什麽日子。
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