声波

The fundamental principle is that the acoustic signal will be more attenuated in the presence of cement than if the casing were uncemented.

基本原理是声波信号在胶结存在时的衰减比胶结差时的要大。

It overcomes the defects of traditional ultrasonic detecting system, such as long cycle to come into the market,upgrade unconvenient and high power consume.

该系统克服了传统声波检测仪上市周期慢、升级不方便、功耗高等缺点，在各方面有了很大的提高。

In underbalance circumstances, the response characteristics of partial logging instruments and the influence upon log data are analyzed and the influemce factors of the data on deep-shallow dual laterolog, compensated sonic log and compensated neutron log, etc.

文章对欠平衡状态下部分测井仪器的回应特徵及测井资料受到的影响进行分析，主要考虑了深浅双侧向、补偿声波、补偿中子等资料的影响因素。

This paper introduced a new way to pressure prediction in undrilled formation by means of extrapolating sonic logging using artificial neural network while combining halfway log data with seismic data.

本文提出一种利用中途测井资料，结合地震信息，通过地震特征参数提取并用神经网络技术建立地震与测井之间的关系和外推井底以下声波曲线，进而预测未钻达地层压力的新方法。

This paper introduced a new way to pressure prediction in undrilled formation by means of extrapolating sonic logging using artificial neural network while combining halfway log data withseismic data.

本文提出一种利用中途测井资料，结合地震信息，通过地震特征参数提取并用神经网络技术建立地震与测井之间的关系和外推井底以下声波曲线，进而预测未钻达地层压力的新方法。

Regarding the density data and acoustic data in logging material as restriction, it also establishes undrilled district log through model seismic inverse, then, calculates elastic constant of rocks, density constant of rocks and even the profile of the following three pressures (pore pressure, caving pressure, fracture pressure). In the end, this thesis can determine safe drilling mud density windows, provide reference for drilling design, guides safe drilling and decreases the occurrence of accident.

将测井资料中的密度数据或是声波数据作为约束条件，通过模型地震反演，构建待钻区域的测井曲线，从而可以用理论和处理手段上比较成熟的测井分析的方法，进行岩石弹性和强度参数的计算，计算地层的三个压力(孔隙压力、坍塌压力、破裂压力)剖面，最终确定安全钻井液密度窗口，为钻井设计提供参考，指导安全钻井，减少钻井事故。

The small but infinite amplitude dust acoustic wave DAW in a collisionless , unmagnetized two ion temperature cold dusty plasma has been studied .

论文第二章研究未磁化的，无碰撞的，双温度离子的冷尘埃等离子体中的有限小振幅尘埃声波。

In chapter three, we derived a KP equation for unmagnetized, hot, collisionless, and two-ion-temperature plasma with isothermal ions and adiabatic dusty fluid.

论文第三章研究未磁化、无碰撞、具有两种温度离子的热尘埃等离子体中的尘埃声波。

While he provided the voice of Fred on Scooby-Doo, he also was the dul cet tones behind such Transformers gre ats as Megatron, Soundwave, Skywarp, Lazerbeak, Rumble, Frenzy, Ravage, and Buzzsaw.

他曾在动画片《史酷比》中为Fred 配音，《变形金刚1》中他为威震天、声波、闹翻天、激光鸟、轰隆隆、迷乱、机器狗以及锯齿鸟这些变形金刚们配音。

While he provided the voice of Fred on Scooby-Doo, he also was the dul cet tones behind such Transformers greats as Megatron, Soundwave, Skywarp, Lazerbeak, Rumble, Frenzy, Ravage, and Buzzsaw.

他曾在动画片《史酷比》中为Fred 配音，《变形金刚1》中他为威震天、声波、闹翻天、激光鸟、轰隆隆、迷乱、机器狗以及锯齿鸟这些变形金刚们配音。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。