adj.顶的(振幅的；峰值的)
The crestal line is the major direction of hydrocarbon migration,the exploration wells near the crestal line are indications of oil and gas. 该构造的脊线是油气运移的主要指向,在脊线附近的探井具有良好的油气显示。
Significant infiltrate associated with evident crestal resorption were noted at 1st week and active remodeling took place at 4th, 5th week in LPS group. LPS组1周很快出现牙龈炎症和明显骨吸收，4、5周炎症渐消退幷有新骨形成；
In view of reservoir properties and development characteristics in Oubei block of Jiangsu Oilfield,a numerical simulation model of gravity drive of crestal nitrogen injection was established. 针对江苏油田欧北区块的地质条件和开发现状,建立了顶部注氮气重力驱数值模型。
