压下

The combination of excess pressure drop across the valve and an increase in velocity shortened the sleeve life.

阀门两端过大的压差和流速的加快的组合作用下，套管的使用寿命就会缩短。

Under the loading of internal pressure or in-plane bending moment, the plastic load analysis solutions of pipe bends with longitudinal crack on bend crown, intrados or extrados are studied and verified by experiments.

系统地研究了在内压或平面内弯矩作用下处于几何中性线，内、外拱线的弯管纵向裂纹塑性极限载荷的解析解，实验验证了本文分析是正确的。

The tests of the optimal growth pressure showed that all of the bacteria were facultative piezophilic that could grow under 40MPa.

压力生长试验的结果表明这6株细菌在40MPa的条件下仍然具有较强的生长能力，属于兼性嗜压菌。

Methods DTI were performed in 20 patients of aMCI, 20 patients of AD and 20 normal control subjects. FA and ADC values were calculated in the regions of interest in inferior fronto-occipital fasciculus, genu and splenium of corpus callosum, superior longitudinal fasciclesⅡand cingulated bundles.

对20例aMCI患者、20例AD患者及20名正常对照者行DTI扫描，以额枕下束、胼胝体膝部及压部、上纵束Ⅱ、扣带束作为感兴趣区测FA值和ADC值。

Ability to work under pressure in a fast-paced environment.

优秀的书面写作和口语沟通能力，能在快节奏的环境下工作，有一定的抗压能力。

A narrow strip of wood used to fasten down the edges of the material that covers hatches in foul weather.

压板条：一种用来固定在恶劣天气下遮盖船舱口材料边缘的窄木条。

A narrow strip of wood used to fasten down the edges of the material that covers hatch es in foul weather.

压板条：一种用来固定在恶劣天气下遮盖船舱口材料边缘的窄木条。

In the end, the main content of this dissertation is addressed.In chapter 2, based on the analysis of present vibrators principle and structure, two kinds of transfer functions and frequency response curves of the vibrator, driven by voltage feedback power amplifier and current feedback amplifier, are given separately. And turnover frequencies between different frequency rangs are also given.

第二章分析了标准振动台的工作原理和结构，在此基础上，建立了标准振动台的机械和电气方程，给出了恒压源和恒流源功放激励下的振动台传递函数及幅频、相频特性曲线，列出了不同频段间的转折频率。

The spatial distribution of forming pressure in electromagnetic forming can be controlled by the configuration of the coil and field shaper.

本计画利用电磁成形的高速成形特性，搭配线圈与集磁块的设计，探讨铝合金以及不锈钢板材在高速成形下对精微特徵尺寸的压印成形能力。

If the unit does not respond to your fingernail , again place two separated fingers against it.

假如这个装置对指甲毫无反应，你的下一步还是用两根手指分别轻压荧幕上两点。

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。