邓布利多示意哈利走到岩石的边缘，岩石上有许多可供踩脚的参差不齐的凹缝，通向下面那些在悬崖周围、半露出海面的巨型卵石。
Dumbledore beckoned Harry to the very edge of the rock where a series of jagged niches made footholds leading down to boulders that lay half-submerged in water and closer to the cliff.
计算结果表明，钎缝圆角的最佳几何形状为钎缝伸出长度略大于钎缝高度的凹型。
The calculating results showed that the optimized geometry of soldering fillet is a concave shape in which the extruding length of the soldering fillet is a little more than the gap height.
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