压力

The results show that the hydraulic fracturing pressure is intimately related with tensile strength and tridimensional stress state of the soil. With the increase of tensile strength and minor principal stress, the fracturing pressure is enhanced.

土体发生水力劈裂时的劈裂压力与土的抗拉强度和土体所处的应力状态之间有着密切的关系，劈裂压力随着土的抗拉强度和小主应力的增加而增加。

The principal stress in the plane strain direction, which can be determined under the rigidity-plasticity assumption using static earth pressure coefficient , is the intermediate principal stress under the limit equilibrium condition. The relationship between major and minor principal stresses is obtained based on the strength criterion.

平面应变方向上的主应力在极限平衡条件下为中主应力，在刚塑性假定的基础上通过静止土压力系数确定，结合强度准则得到大主应力与小主应力之间的关系，进而求得土压力系数。

The test results show the principle of variation of pressures on culverts beneath high fill is similar, it is that, even if the embankment is filled up to a higher height, the earth pressures can still partly transfer to the top of culvert, as a result the pressures on the culvert increase nonlinearly with the variation of height of fill and further the pressures are obviously lower than theoretical value by σ=γH.

模型试验和数值模拟计算结果表明，当填土达到一定高度后，高填方涵洞上方将产生明显的拱效应，但由于涵洞填土为破碎的岩土，其拱效应与岩石中开挖洞室上方的拱效应不同，高填方涵洞上方填土产生的"土拱"效应具有不稳定的特点，表现为随着填土高度的增加仍有部分土压力传递到涵洞上，涵顶土压力随填土高度成非线性增加。

At the same time, the paper studied the mechanisms of multiphase flow and formation damage, as well as the distribution law of producible fluid of low-permeability reservoir by these methods.

主要研究结论如下：首次建立了同时测量岩心孔隙度、渗透率和孔径分布及其随有效压力变化的核磁共振测试方法，研究结果表明：随着地层压力的降低，岩心孔隙度略有降低。

In particular, the National Bureau of Statistics in November to disclose economic data, the market's short-term profit-taking pressure suddenly increased, increased the pressure.

特别是，国家统计局公布11月份经济数据，市场短期获利回吐的压力突然增加，增加了压力。

The local peasant undergoes the process of class differentiation within rural village. From the 1980s onwards, they are under the pressure of proletarianization. They lost farm land and advantages in local market. These transformations change the social division of labor in rural village. The only way against this process is the expansion of village government and its administrative power. The need of strengthening security force leads to more recruitment of young people. It mitigates the pressure of proletarianization and forms the basis of the local society.

至於本地农民，他们经历了农村内部的阶级分化。80年代后，农民面对无产阶级化压力增加，农民失去土地，在地方市场上也开始失去优势，这些正在改变著农村的社会分工，唯一减慢或转化这个过程的是，农村基层组织的膨胀及吸纳，由於其基层管理权力的膨胀，以及加强治安能力的需要，增聘了不少年青劳动力，稍为纾缓了部份无产阶级化的压力，同时形成了本地社群的基础。

We calculated the pressures up to 1000 MPa for gun propellants with different compositions.

在1000MPa的压力范围内，理论计算的最大压力与实测值具有较好的一致性。

At the same time, the introduction of proportional solenoid control valve core part of the location of the pilot, the design specifications for valves used in Path parameter for the 32mm, the largest flow 480L/min, I rated the work of oil into the pressure of 31.5MPa, I rated the oil pressure to 30.5MPa.

同时引入比例电磁铁控制先导部分阀芯位置，本设计所采用的阀门规格为通径参数为32mm，最大流量为480L/min，进油口额定工作压力为31.5MPa，出油口额定工作压力为30.5MPa。

Partial fracturing wells in Sulige Gasfield produces massive sand slurry because of unreasonable proration during their production. Some phenomena occur such as a lot of sand production, accumulation in wellbore, off production due to watered out, and yield decline as well as pressure drop, resulting in influencing the production result to a great extent.

中文摘要：苏里格气田部分压裂井在生产中因配产不合理出现了：①产量过大导致生产大量出砂影响生产；②气井生产流量达不到携带井底积液的要求，区块内出现较大一批积液井、水淹井；③由于配产不合理致使气井生产无稳产期，投产后压力、产量直线下降至废弃压力生产阶段，极大程度上影响了气井的生产效果。

Despite that, there is a lot of pressure in almost every country - domestic pressure for more protectionism.

虽然如此，但在几乎所有的国家很多压力-国内更多的保护主义压力。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。