Stresses applied to plastically deform the metal are usually compressive. 適用於金屬塑性變形的應力通常都是壓應力。
The maximum draw stress located on the lingual apex, while the maximum compressive stress located on the lingual crest of the ridge. 最大拉應力位於舌側根尖部，最大壓應力位於舌側牙槽嵴頂。
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