a concrete beam with two piezoelectric sensors respectively embedded at its two ends, as a sensing element, is designed to be installed under the wearing course of highway.
首先将两个水泥基压电传感器埋入一段混凝土梁的两端,以此梁作为埋入路面下的传感单元。
base course [highways]: the part of a road structure below the wearing course and above the road base.