最后一行有4个槽位，中间两个有盖，另外两个背角的有圆槽的，可以放置你的手机和MP3播放器，同时它们可以进行充电。
The last row has four compartments, two middle ones with LIDS and two corner ones with round back slot to let you stand your cell phone and MP3 player as they are charging.
圆头一字槽螺钉的俯视图。选择框代表螺纹直径。
Top view of roundhead slotted screw. Selection box represents thread diameter.
对汽封弹性槽计算的结果表明：将原来设计的单圆弧弹性槽改为三圆弧弹性槽，热应变及热应变集中系数均可明显下降。
Thermal strain and strain concentration factor can also be reduced significantly by changing the single curvature relieve slot into three curvature relieve slot.
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