薄薄的一层表土被冲走了。A thin layer of topsoil was swept away.那单薄的土地很快就失去了表土,成为沙粒和尘埃.The fragile land quickly lost its topsoil and became nothing but sand and dust.从工地挖出的表土须用于筑堤的石笼上.Topsoil excavated from the work site shall be app...
Educed preferably and reliability testing result through practical test.通过实际实施应用,得出了可信度较好的测试结果.The calculated results showed that ZMS adsorbent adsorbs preferably oxygen to nitrogen.实验结果表明,沸石分子筛吸附剂优先吸附氮.All junctions of ...