查询词典 pressure point

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

Because the temperature along the pipeline is not a constant, it changes the velocity of the negative-pressure-wave; the Romberg algorithm of numeric integral and the searching for algorithm are emloyed to locate the leakage.Multi-scale decomposition and reconstruction of wavelet transform is applied to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of Δt in location formula, and the location accuracy is improved.

利用小波变换的多分辨分析和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了消噪处理；并利用小波变换技术对信号奇异点快速、准确的识别能力，对经过消噪处理后的负压波信号进行了奇异点捕捉，准确确定了定位公式中上、下游站点采集到的负压波奇异点的时间差△t，从而提高了定位的精度。

When the flowing pressure is lower than the saturation pressure,the inflow performance curve concave to the pressure axial causing a maximum flow rate point.

当流压低于饱和压力以后，流入动态指示曲线凹向压力轴，会出现一个产量最大点。

When the internal pressure of liquid, which dropped below the liquid at that temperature the saturation vapor pressure at the local area or the formation of steam bubble point; and stress at elevated places around the bubble suddenly breaking pressure, flow due to inertia to high speed to the center of bubble extrusion, hydraulic shock caused by the equipment.

当液体内部压力下降，低于液体在该温度下的饱和蒸汽压时，在局部区域形成汽泡或汽穴；而在压力升高的地方汽泡突然被四周的压力压破，液流因惯性以极高的速度向汽泡的中心挤压，对设备造成水力冲击。

Flexo business card printing and membership card making pressure adjustments is the crucial step of product quality, direct impact prints fine is good or bad, as printed on the roll and the spacing between the embossing roll is the same, you can choose to use 2.08mm (1.7 printing plate + 0.38 doubleside Strip) standard thickness of Feller gauge, so that both ends of the respective Feller gauge the same pulling resistance, at which point the amount of space is business card printing and membership card to make the best pressure value (but in actual production, you need to fine-tune your carefully at the operative level, it is necessary to the practical experience of technical personnel to obtain the best pressure value).

柔性版制卡和会员卡制作压力的调节，是产品质量的关键步骤，直接影响印品的精美好坏，印版辊与压印辊之间的间距是一样的，可选用2.08mm(1.7印版+0.38双面胶带)厚度的标准塞尺，使两端各自的塞尺拉动阻力相同，此时的间距就是制卡和会员卡制作最理想的压力值(但是在实际生产中，需要操作人员的仔细微调，那就需要技术人员的实际经验来获得最佳的压力值)。

The difference between the calculating results of gas-oil rate considering or neglecting casing gas is compared. It is demonstrated that bigger error will be caused without considering casing gas. When the pressure at the casing shoe is lower than the babble point pressure, there is a certain proportion relation between the easing gas production and the submergence pressure as well as the easing-tubing sectional area ratio.

针对放套管气生产油井，现场测试了多口油井的套管气量，比较了考虑套管气与忽略套管气对气油比计算结果的差异，证明忽略套管气产量会给气油比计算结果带来较大偏差。

Square dot 5% point targejia, in the four corners phase business card printing and membership card making pressure, 5% point to expand capacity, on the transition from the hiberarchy, 5% point form a fairly obvious dot-jump; circular to about 70% to produce himself, then also imprint-jump, just look at the level of the jump, we need it to be put off; chain-shaped dot is divided into two time point respectively at 25% and 75% of the two places at once, each producing a smaller level.

方不神网不背在5不败不背处四角相搭，在制卡和会员卡制息不张力功用下，5不败不背扩不小量最不小，从条理过渡上看，5不败不背处不神不败一不主较为澄辉的级跳；圆不神网不背给到约70%爆发搭边，这时同样会爆发压印级跳，只是在条理上看，它的级跳处向后提后；链不神网不背不合两不主搭角，不合别在25%和75%两处，各爆发一不主小一些的级跳。

Because the major load bearing on retaining wall is soil pressure, the Coulombs theory of soil pressure, which is often used in engineering, is adopted to calculate the magnitude and the action point of soil pressure.

由于挡土墙所承受的主要荷载是土压力，因此采用工程中普遍使用的库仑土压力理论来计算土压力的大小和作用点。

When passing water roll manual pressure chinsang water roller test pressure, the pressure to find a bigger point, and they are being built by chromeplating hard iron roller, too much stress borne water roll like a frame on the same series water rolls, resulting in a biography of the shaft and water roll and bucket motor drive gear does not match the space is large, it will be some operation.

当把传水辊手不静压上串水辊尝试不张力时，发掘两者之间的不张力不小了不面，而它们都是经过镀铬的软铁辊，过不小的不张力会使传水辊像架在串水辊上不同，导致传水辊轴脚与水斗电机传不静齿轮不匹配，间隙较不小，运转时不离会有些颤不静。

In this paper, the analytical solutions of reservoir pressure in Laplace space are developed for planar linear flow and radial flow under the condition of constant pressure at inner and outer boundaries, and the pressure distribution curves in some point in the reservoir are obtained using Stehfest numerical inversion algorithm of Laplace transforms.

本文在内、外边界定压的条件下得到了平面单向流和平面径向流两种渗流形式在拉氏空间的解析解，利用Ste hfest数值反演方法给出了地层各点的压力分布曲线，由这些曲线可以清楚地看到流体的流动由不稳态流向稳态流过渡以及最后达到稳态流的过程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。