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| 61. | and bacteria are saprobes, and are important decomposers in food chains, returning nutrients to the soil |
| 许多真菌和细菌属于此类生物，它们在食物链中扮演重要的分解者角色，可以使营养物质通过腐败作用返回土壤。 |
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| 62. | unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together |
| 冰河沉淀形成的不分层的土壤，由沙、粘土、砂砾和漂石混合而成。 |
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| 63. | Overgrazing( again, widely practised by" traditional" cultures) causes soil erosion and turns fertile |
| 过度放牧（同样也被“传统的”耕作所广泛采用）致了土壤浸蚀，并把肥沃的草原变成了沙漠。 |
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| 64. | Through deducing the Green′ s function in a three level layer soil by complex image method, application |
| 通过运用等值复数镜像法求出水平三层土壤中的格林函数，阐述等值复数镜像法的应用。 |
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| 65. | a red soil produced by rock decay; contains insoluble deposits of ferric and aluminum oxides. |
| 一种因岩石腐烂而产生的红色土壤，含不能溶解的铁铝氧化物沉淀。 |
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| 66. | Water deficit is influenced by the level of soil water potential at the root surface. |
| 水分亏缺是受根系表面土壤水势高低影响的。 |
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| 67. | To reduce(nitrates or nitrites)to nitrogen - containing gases, as by bacterial action on soil. |
| 使变成含氮气体（将硝酸盐或氮化物）变成含氮气体，例如通过对土壤的细菌作用 |
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| 68. | a fine-grained fertile soil deposited by water flowing over flood plains or in river beds. |
| 细颗粒的肥沃土壤，形成于被水淹没的平原或河床。 |
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| 69. | it was shown that load-displacement of pile groups and load distribution on pile top were affected by |
| 在此基础上，分析了刚性承台条件下超大群桩基础的荷载位移曲线变化规律以及桩顶荷载分布规律受桩土刚度比、桩长、桩径、桩距、桩数、土性等因素的影响规律。 |
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| 70. | Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, researches of saturated |
| 摘要通过对砂卵石土室内动三轴试验，对饱和砂卵石土的动力特性进行了较为深入地研究。 |
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