subsurface layer短语¹⁴⁴⁹⁷²⁺² 基本例句 地下层 The more mixing that occurs in the estuary, the greater is the landward flow in the subsurface layer. 在河口湾出现的混合越强烈，次表层向陆地方向的流量就越大。 ebigear The results show that the distribution of macro-hardness presents gradient change, the subsurface layer's hardness is highest, its is542 HV. 结果表明：渗层到基体的显微硬度呈梯度变化，最高硬度出现在亚表层，硬度为542 HV； rjggy.net