压下的

How to study the corrosive factors of media corrosion in oil and gas gathering pipelines under the condition of multiphase flow is discussed and mathematical models are established. The effects of media flow rate, oxygen content, pH, salinity, temperature, pressure of CO2 and water content on 20(superscript #) tubular goods are introduced.

讨论了在多相流条件下如何对油田集输管线介质进行腐蚀因素研究并建立数学模型，研究了集输管线介质流速、含氧量、pH值、矿化度、温度、二氧化碳分压、含水共7个因素对20材管材的腐蚀影响趋势。

Think of the bottom bracket as a focus your arms pulling down and back; helping to pivot and press the rear tire in the ground.

试着想象以B.B。为中心，腿部向下及向后拉的动作有助于将后轮压于地面上，而运用辅助把手，也会增加出力。

Think of the bottom bracket as a focus your arms pulling down and back; helping to pivot and press the rear tire in the ground.

试著想像以B.B。为中心，腿部向下及向后拉的动作有助於将后轮压於地面上，而运用辅助把手，也会增加出力。

The three-phased half-controlled bridge commutation and stabilizing voltage adjuster of permanent-magnet generator , which is also a rectifier, wastes a little electricity power and outputs high efficiency , makes it generate stable direct circuit, solves vehicle's problem of generating stable voltage at variable speed and variable load.

永磁发电机三相半控桥式整流稳压器集稳压、整流于一体，电能消耗少，发电效率高，输出直流电压稳定，解决了汽车用永磁发电机在变转速、变负载工况下输出电压保持稳定的问题。

The oil fruit is crushed by stone mill under 25'C temperature as soon as they are picked from the trees, immediately bootles after filtered. It helps to keep the nutrition and fragrance of oil by such traditional way.

因为奥利塔特级冷压橄榄油制作方法跟二千年前一样，以新鲜手采橄榄在25度C环境下，石磨冷压榨出油，过滤后直接装罐封瓶，才能如此完整保留橄榄油的营养价值及风味。

The primary objective is to study the effect of high-modulus PVA fibers on improving the seismic performance of super-high-strength concrete short column s with high axial pressure ratio.

试验旨在研究在较高轴压比条件下，高弹模PVA纤维对超高强混凝土短柱抗震延性的改善作用。

During the plasticizing stage, the melted plastic will not only be pressed dense and solid by the thrust of the screw plate, but also heated by the thermo that transferred from the cylinder shell and by the friction thermo that generated between the plastic particles and the cylinder shell and the screw, with the temperature gradually rising to the melting point.

塑化时，塑料在螺杆罗棱的推动下，在螺槽中被压实，并接受机筒壁所传热量，加上塑料与塑料、塑料与机筒及螺杆表面磨擦生热，温度逐渐升高到熔融温度。

One woman's elbow rests on a claim form for lost land and property.

一名女子的肘下，压着一份损失土地财产索赔表格。

The project rockburst occurs much in the depth portion understructure work, belongs to three bearing conditions, three principal stress disparities are not big, the energy liberation becomes more and more difficult, therefore under the high crustal stress condition the rock mass can deposit the massive energies of deformation.

工程岩爆多发生在深部地下工程中，属于三项受压状态，三个主应力差距不大，能量释放变得越来越困难，高地应力条件下岩体能够储蓄大量的变形能。

The displacements, stresses and pore pressures change with time are analyzed in the paper.

分析在瞬态载荷作用下位移、应力和孔压随时间的变化情况。

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。