serious defect

基本解釋

It is always a challenge for clinical medical workers to reconstruct the serious defect of the peripheral tissue.
長久以來，周圍組織嚴(yán)重缺損的修復(fù)一直是個難題。
kns50.chkd.cnki.net
Serious tooth defect which involved cuspid, incisal angle, marginal ridge and occlusal surface can't be filled and need occlusal reconstruction.
各種嚴(yán)重的牙體缺損已涉及牙尖、切角、邊緣嵴以及合面，需要咬合重建而不能使用一般充填修復(fù)者。
This paper presents the serious defect that in control theory. The relative stability of control systems is not only for the traditional definition. The means to solve this problem is discussed.
本文提出在控制理論中對系統(tǒng)相對穩(wěn)定性的傳統(tǒng)定義存在相對穩(wěn)定性指標(biāo)不唯一的重要缺陷，并探討了解決這個問題的途徑。