The boy leant against the wall, his teeth set and his eyes glaring upward.
那个男孩斜靠在墙上，牙关紧闭，愤怒的双眼直射上方。
The variation of equivalent stress near the hole wall with the depth of the teeth pressed is analyzed.
详细分析了孔眼壁附近的等效应力随牙齿压入深度的变化关系。
Laser welding thin wall bit is characterized by high welding strength of bit teeth, no falling out of the teeth and mass production by non water dry drilling.
激光焊接薄壁钻头的显著特点是钻齿焊接强度高，不掉齿，可以用于无水干钻，便于实现大批量规模化生产。
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