reference surface center的用法和樣例：
例句
- The portions of the crack near the saw cut and along the edges are closed in relation to the center of the crack face.
接近鋸切口和沿著(zhù)邊緣的裂紋部分相對于裂紋面中心而肯定是閉合的。 - The temperature of body centerline has been computed by reference temperature and experience formulas and boundary layer transition has been considered.
主要采用參考溫度法和經(jīng)驗公式法，并考慮了邊界層轉捩，對飛行器迎風(fēng)面中心線(xiàn)上的溫度分布進(jìn)行了計算。
