Based on the definition of petroliferous basin in China, its distribution was revealed in terms of background of plate tectonics evolution, dynamics of basin formation and time of oil/ gas zone.

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Now comes the really boring part, you'll have to take a copy of your background plate, and place it at the top layer.

现在到了一个烦人的部分，你需要拷贝一份背景图层，将其放置在最上层。

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Nonstationary quiver spindle background sound analysis of airplane via Wigner-Ville and wavelet time-scale distribution

基于Wigner-Ville分布和Wavelet时间尺度的飞机非平稳抖杆背景声分析

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Enable background sound and music;

打开背景音响和音乐功能；

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Measurement& Analysis of Typical Cockpit Background Sound in Anechoic Room

典型舱音背景声在消声室中测试分析研究

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Influence of weak background sound on sound signal perception

弱背景声对声音信号感受的影响

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Development and application of real-time analysis system on cockpit voice background sound in airplane

飞机舱音背景声特征实时分析系统开发及应用

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The background sound of an environment in relation to which all foreground sounds are heard, such as the'silence'of an empty room, conversation in a restaurant, or the stillness of a forest.

环境的背景声音指的是所有可听到的突出声音，比如空房间里的“静默之声”，餐馆里的谈话，或者森林里的沉寂。

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The disruption by background sound is imposed at both encoding and rehearsal periods.

背景声音干扰处于编码阶段和复述阶段。

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Preventive management of veinous backflow obstruction of infrahyoid myocutaneous flap

舌骨下肌皮瓣静脉回流障碍的预防性处理

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Junction Treatment in Computation of Short Backfire Antenna by Moment Method

短背射天线矩量法计算中的结头处理

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The backfire antenna is a kind of compact structure, high gain and lower sidelobe antenna, but its bandwidth is limited.

背射式天线具有增益高、副瓣低和结构紧凑的特点，但其频带较窄。

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The final result shows that the stress peak value of the tunnel is reduced by 95% with the foamed concrete backfill layers, and dynamic parameter such as acceleration and displacement is attenuated to a certain extent.

计算结果表明，增加泡沫混凝土耗能层后，坑道结构的应力峰值衰减了95%以上，加速度和位移等运动参数也有不同程度的降低。

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The dynamic response of tunnels can largely be reduced by the foamed concrete backfill layers, which can be used to construct a sort of ideal energy absorption support structure.

泡沫混凝土耗能层能够明显减小结构的动力响应，可以用来构筑较理想的结构消波吸能型式。

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Comparing with conventional concrete backfill technology, the new one of concrete backfill using for embedded pre Pressure steel Pipes has some advantages such as shorter construction period, lower cost.

埋藏式预压力钢管混凝土回填新技术与常规回填相比，简化了施工措施，缩短了工期，具有良好的技术经济效益。

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A Kind of New Technology of Concrete Backfill Using for Embedded Pre-pressure Steel Pipe in Xiangshui Hydropower Station

响水电站埋藏式预压力钢管混凝土回填新技术

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An Experimental Study on Strength Properities of Concrete Backfill

混凝土充填体强度特性试验研究

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Key construction technique mainly includes maintaining cavern stability, protecting surrounding rock integrity and guaranteeing concrete backfill quality.

关键施工技术主要体现于维护施工期洞室稳定，保护围岩完整性和保证结构混凝土回填质量三方面。

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The Backfill Grouting for the Underground Culvert at West Ring Road of the South-North Water Transfer Project

南水北调西四环暗涵工程回填灌浆施工

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Forced Defrosting and Backfill Grouting Composite Application at φ 14.87 Shield Launching Section Frozen Area

φ14.87盾构出洞段冻结区强制解冻及注浆充填的复合应用

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Construction of Backfill Grouting and Consolidation Grouting In Tunnel Excavated by TBM

TBM掘进隧洞回填固结灌浆施工的探讨

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