... anti-erosion ultrasonic level sensor 防腐型超声波物位仪 datum level of erosion 侵蚀基准面 bse level of erosion 侵蚀基准面 ...
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There are three different conceptions about base-level that are base level of erosion, base level of deposition and stratigraphic datum, respectively.
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和地层基准面。
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