thicknesser划线盘thicknessn.厚度；浓度；层thickness of lamina epithelium上皮层厚度thickness measurement by laser激光测厚thickness measuring instrument厚度测定仪Thickness of remnant wax layer余蜡厚度thicknesses of component layers包覆板厚度thickness/resistivity sorter厚度 电阻率分选机thickness measurement equipment厚度测量仪thickness wave drag coefficient厚度波阻系数thickness of pavement structure结构层厚度Thickness of mortarat bed joint水平灰缝厚度