evolvement characteristics 基本例句 演化特征 The characteristics of sedimentary cycles and evolution of systems tracts, as well as the implications for source rock and reservoir development, are discussed.根据延长组旋回特征和体系域的发育情况，分析了沉积旋回的边界及演化特征和层序对延长组生储盖层配置关系的控制作用。