原油受到了自然产生的分解油类物质的微生物的侵蚀。The oil is attacked by naturally occurring microbes which break it down.还有更多熟悉的地貌是因地表侵蚀形成的。More familiar landscapes have been sculpted by surface erosion.这会让肥沃的土壤暴露在外，使其容易受到侵蚀。This leaves fertile ...
The lake rippled gently.湖面轻轻地泛起涟漪。The water rippled over the stones.水从石头上流过, 发出潺潺的声音。A slight wind rippled the crops in the valley...一阵微风吹过，山谷里的庄稼便随风起伏。The tops of the trees rippled in the breeze.树冠在微风中婆娑摇曳。The wind ripp...
Orientation control of primary carbide in Fe - Cr - C hardfacing alloys.Fe -Cr-C 耐磨堆焊合金中初生碳化物生长方向的控制.A hardfacing electrode containing boron and various alloy elements has been developed.研制出一种含硼等多种合金元素的耐高温磨损堆焊焊条.Study of...
The learner corpus - based approaches include CIA ( Contrastive Interlanguage Analysis ) and CEA ( Computer - aided Error Analysis ).其研究方法包括中介语对比分析和计算机辅助错误分析.The study of fossilization in interlanguage is of great help t...