查询词典 Under Pressure

Meanwhile, the double plate in the spring under the static pressure on both sides to ensure the seal does not leak, when the ram pressure on one side, the other side of the role of energy through the spring and sealing seat closer contact to achieve the sealing effect.

同时，双闸板在弹簧静压下能保证两面密封不渗漏，当闸板的一面有压力时，另一面通过弹簧的作用能和密封座更紧密的接触，以达到密封的效果。

Normally, large self-respect Pressure Reducing and Sustaining Control Valves and the upper valve plate pressed under the pressure of the spring pressed in the seat, so that the valve is turned off.

平时，大阀板在自重和上部压紧弹簧的压力下压紧在阀座上，使阀门处于关闭状态。

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

18 Set pressure: The gauge pressure at the device inlet at which the relief device is set to start opening under service conditions.

3.18 设定压力：泄放设施刚开始打开时的入口表压

The principle then is under lots of pressure to reach higher school ranking and I guess he/she will also give pressure to the teachers to beef up the teaching method in order to score higher points.

对了！ 学生要参加州级和国家级的考试，其结果对学校比起其他州或国家的所处地位，都有好的指标作用，校长在许多的压力下，让学校达到更高的等级，我想他/她也会将压力转移给老师来提高教学方式，以让成绩高一点。

In the experimentation, the premixed propane-air flame propagation behavior was studied as the following:(1) Study on pressure wave influence on premixed propane-air flame propagation behavior under different pressure relief case The high speed Schlieren photograph method was used to record the dynamic process of flame propagation clearly, including the precise flame front position, flame structure, and so on.

实验过程中，首先利用预混火焰精细实验台对丙烷-空气预混火焰的传播特性进行了实验研究：(1)重点研究了不同泄压条件下的压力波对丙烷-空气预混火焰传播特性的影响。

In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock, the tests with varying scale charge and scale distance of the first drilled explosion and the repeated drilled explosion are completed.

为探索常规武器重复打击下岩石介质中压力波及正压作用时间随传播距离的增加而衰减的规律，进行岩石介质中不同比例装约和比例距离的一次钻孔爆炸和重复钻孔爆炸试验。

The rock-melting drill is of a shape and is propelled under sufficient pressure to produce and extend cracks in solid rock radially around the bore by means of hydrostatic pressure developed in the molten rock ahead of the advancing rock drill penetrator.

这种岩熔钻孔机具有着一种形状，它在足够的压力下才能推进，从而在坚硬的岩石中产生裂缝并使其在钻孔周围成放射状地扩展延伸，它是凭借液体静压力的方式推进的，而这种静压力产生于正前进的凿岩机弹头前方的熔融岩石。

It is found that channels with aspect ratio about 8 present the lowest effective thermal resistance at low pressure drop. However, the lowest effective thermal resistance appears for aspect ratio of 11 under high pressure drop.

研究结果发现，在低压力差的条件下，最低热阻值皆发生在深宽比约为8；但在高压力差的情况下，热阻值随著深宽比的增加而降低，且在深宽比大於11后趋向於定值。

Based on Betti energy iterative law, the damage deformation mechanism of fractured rock mass under stress and seepage pressure has been studied. Furthermore 3D elastic and elastoplastic damage-fracture constitutive relation and damage evolution equation considering seepage pressure have been established.

基于Betti能量互易定理，系统研究了应力场与渗流场共同作用下的岩体损伤演化机制，建立了考虑渗透压力的三维含水裂隙岩体脆弹性和弹塑性断裂损伤本构模型和损伤演化方程。

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。