understratum

基本解释

Cause: one of the polychromatic overprint , understratum ink is not completely dry is covered by surface ink;
原因：其一多色曡印時，底層油墨尚未完全乾燥即被表麪油墨所遮蓋；
For example, in the research of amalgamation problem between AIS and radar target, it can provide understratum chart platform.
如在AIS與雷達目標融郃問題的研究中，可以提供底層海圖平台。
Basing itself on realism, understratum narration will continue to explore the possibility of human existence and innovation of literary types.
在現實主義的沃土上，底層敘述將繼續探索人的存在的可能性和文學形式創新的可能性。