When designing a valplast denture, the covered area of gingiva by the clasp should be reduced. The margin of the clasp should be far from the margin of gingiva.是什么意思_When designing a valplast denture, the covered area of gingiva by the clasp should be reduced. The margin of the clasp should be far from the margin of gingiva.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句