If the sediment underlying a hydrate entraps natural gas, its acoustic velocity will become much lower, resulting in vivid characteristics of reflections.
若水合物下方的沉积物捕集了天然气，其声速会更低，由此产生的反射波具有鲜明的特点。
When these characteristics are considered and assume that the interface of sea water and sediment is a plane, the expression of reflection coefficient is derived.
考虑到这些特征，再假设海水与沉积物的界面是平的，导出了平面声波在其上的反射系数的表达式。
The results showed that fine particle sediment type is the main sediment type, which has the sedimentation characteristics of silt shore belt.
结果表明，该区表层沉积物类型以细颗粒沉积为主，具有淤泥质岸带的沉积特征。
Sediment density is one of main physical characteristics of river sediment.
泥沙密度是河流泥沙的主要物理特性之一。
Trough the study of the vertical distribution characteristics of organochlorine pesticides in the sediment core, the pollution history of organochlorine pesticides in Quanzhou Bay was discussed.
通过研究有机氯农药在沉积物柱样中的垂直分布特征，探讨了有机氯农药在泉州湾的污染历史。
The generation process of runoff and sediment erosion and the hydrodynamic characteristics of flow on forage grass slope with different coverage are quantitatively studied in laboratory.
通过室内模拟降雨试验，研究了不同盖度草地与裸地坡面的产流产沙过程与坡面流水动力学特性。
Study the space distribution characteristics of heavy metals in sediment.
详细研究了水系沉积物中重金属的空间分布特征。
The extraction of acoustic characteristics of ocean sediment has great importance to civil and military activities.
海底沉积层声学特性提取在军事和民用上都具有重要意义。
According to the characteristics of the irrigation district, this article has introduced the methods and measures of sediment disposals for the WSI based on the topographical conditions.
本文根据灌区特点，提出了从灌区地形、地理位置出发，探讨了引黄节水灌溉泥沙处理的方法和措施。
The land use spatial distribution pattern had a decisive impact on the inter-year variation characteristics of both runoff and sediment.
土地利用类型的空间分布格局决定了径流和泥沙的年际变化特征。
The article analyzes characteristics of basin of sediment, sediment sources, sediment extended range changes, and sediment on the Liaohe of Liuhe. Liuhe river basin; sediment sources.
本文分析了柳河流域的泥沙特性、泥沙来源、泥沙延程变化，以及柳河泥沙对辽河的影响。柳河流域；泥沙来源。
Phosphorus exchange processes between the sediment and water are directly associated with the physical and chemical characteristics of the sediment itself.
沉积物-水界面的磷交换过程与沉积物本身的物理化学特征直接相关。
These characteristics depend on the types of sediment, which in investigating area is coarse and polychaete does not fit to breed largely.
这些分布特征取决于底质类型，该海区沉积颗粒较粗，不利于多毛类繁衍。
These results are related to the characteristics of seafloor surface sediments such as physical-mechanical features, grain contact state and sediment microstructure, etc.
这些结果与海底浅表层沉积物的物理力学性质、颗粒接触状态、颗粒的微结构等特征有关。
The results show that the equivalent grain can reflect the characteristics of the sediment incipient motion.
说明采用等效粒径能反映泥沙的起动特性。
The relationship between the characteristics of the grain-size distributions of thin beds for clastic sediment and the conditions of waterpower in deposition is studied in the article.
本文研究了碎屑沉积物薄层粒度的分布特征与沉积水动力条件的关系。
This paper analyses the characteristics of runoff and sediment changes since 1950 in the Upper and Middle Yellow River.
本文对1950年以来黄河上中游水沙变化特点进行了分析。
Making use of measured data in-situ, this paper carried out analysis and investigation on the tidal current characteristics in spoil area and the regularity of sediment motion.
本文利用现场实测资料，对抛泥区的潮流特征、泥沙运动规律作以分析研究。
Mainly based on conditions of current, sediment and characteristics of bridge pier, local scour is calculated according to specifications.
桥墩的局部冲刷，公式计算方法主要是根据桥墩附近的水流条件、泥沙条件、和桥墩特征条件，按规范计算得出结果。
On the basis of experiment study, the characteristics of sediment flow aerated artificially in a outlet structure are discussed in this paper.
本文在试验研究的基础上，探讨了在泄洪排沙建筑物中采用挑坎等人工掺气设施后的浑水掺气特性。
According of east abyssal plain of the Okinawa Trough with some volcanic materials, it show strong magnetic characteristics different from other sediment environments.
冲绳海槽东槽底平原沉积物含有较多的火山物质，磁学特征与其它沉积环境有明显差异，各磁性参数特征值也明显较强。
Depositing process mechanics is the unsubstantial part, study on physical characteristics indexes of farmland sediment for check dam is very important for depositing process mechanics.
淤地坝淤积过程机理的研究是个薄弱环节，坝地淤积物的主要物理特性指标的研究能为淤积过程机理的研究提供重要依据。
By analyzing the sediment movement characteristics, we use the selected empirical formulas to forecast the coastal evolution after the regulation project in Guanhe estuary.
通过分析灌河口附近海域的泥沙运动特点，采用经验公式从定性和定量两个方面对灌河口拦门沙整治工程后的岸滩演变进行了预报。
According to the observed runoff and sediment data of Lijin Hydrometric Station, the paper analyzes the characteristics of runoff and sediment variations of the Yellow River mouth since 1950.
根据利津水文站的实测水沙资料，分析了1950年以来黄河口水沙的变化特征。
National moral condition is the sediment of moral history, showing characteristics of logic, independence and stability in its entirety.
道德国情是道德历史演进的沉积物，在整体上表现出逻辑性、独立性和稳定性的特产、；
The optimal designing theory of deep foundation pit dewatering for controlling land subsidence was discussed in loose sediment with great thickness and complex characteristics.
优化设计理论的深基坑降水，地面沉降控制在松散沉积物厚度大，复杂的特点进行了讨论。
The distribution characteristics of HCB discharged from a chemical plant in water, sediment, soil and plant sample was studied.
研究了某化工厂排放的六氯苯在水体、沉积物、土壤和植物中的分布情况。
The flume model of Hangzhou Metro Line 2 section of the Qiantang river tunnel is established according to the characteristics of Qiantang river estuary flow and sediment.
根据钱塘江河口的流场和泥沙特性，建立了杭州地铁2号线钱塘江过江隧道段动床水槽模型。
This paper describes the characteristics of fractal structure of bridging flocculated aggregates by using settling technique integrating with SEM photographs of Yellow-River sediment flocs.
本文采用沉降技术并结合黄河泥沙架桥絮凝体的电镜照片，对絮体分形特征进行了研究。
This paper describes the characteristics of fractal structure of bridging flocculated aggregates by using settling technique integrating with SEM photographs of Yellow-River sediment flocs.
本文采用沉降技术并结合黄河泥沙架桥絮凝体的电镜照片，对絮体分形特征进行了研究。
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