压力

MethodsTwenty volunteers with normal hearing level and tympanic pressure were enrolled and kept at airtight container. The inner pressure was changed to 2 kPa and 4 kPa below normal atmospheric pressure in 50 s and recovered to the normal pressure, the pure tune hearing threshold of 500, 1 000 and 2 000 Hz and tympanic pressure were measured, and acoustic impedance curve characteristic and tympanic membrane appearance were recorded at each time points.

方法选取听力和鼓室压力正常的受试者20例，即单耳40耳，评估其于50s改变密闭模拟电梯容器压力低于正常大气压2kPa、50s改变密闭容器压力低于正常大气压4kPa、以及压力恢复至正常水平时，言语频率500、1000、2000Hz的纯音听阈，鼓室压值和声阻抗曲线图形形态，以及鼓膜形态。

After giving a brief analysis of pressure hazards and accident simulation methods, the authors introduce the system of European PED - EN system for pressure equipment in order to eliminate or reduce pressure hazards by studying 97/23/EC Pressure Equipment Directive and EN13445 Unfired Pressure Vessels and describe the impacts of PED - EN system on the ASME pressure vessel codes and the...

本文在简要分析压力危险以及事故后果模拟方法的基础上，先结合97/23/EC《承压设备指令》、EN13445《非火焰接触压力容器》等规范标准，介绍以消除或降低压力危险为出发点的欧盟承压设备规范标准体系，再介绍美国应对欧盟97/23/EC《承压设备指令》的对策措施，最后提出按压力危险程度确定承压设备的范畴、以标准应满足法规要求的理念建立承压设备法规标准体系、开展承压设备基本安全要求研究、研究承压设备最新规范标准和我国应对策略、成立中国承压设备研究委员会等建议。

A new strategy for universe of discourse partition and optimizing the parameters updating algorithm of fuzzy neural controller is proposed.

以流量、入口压力和出口压力偏差的平方加权和为误差代价函数，实现对大容量输油泵流量、入口压力和出口压力的协调优化控制。

The recovery and displacement efficiency of the matrix block dominated by capillary force is compared with that domonated by the couple of capillary and viscous force, and by viscous force.

在驱动压力和毛管压力的不同平衡(驱动压力和毛管压力的相对大小)关系下的水驱油采收率和水驱油效率的变化规律

With determining and comparing the result of the output of chlorine dioxide, the purity of chlorine dioxide, the rate of chlorine dioxide, the capacity of active chlorine and the output of chlorine generated by positive pressure type chlorine dioxide generator under different pressure, this paper draws the conclusion that the effect of pressure to aerogenesis efficiency of chlorine dioxide generator is indistinctive when the pressure is in the range of 0～0.6M Pa.

从化学平衡角度分析，压力增加会抑制正向反应的进行。为了验证实际效果是否如此，本文通过在不同压力下对正压式反应器 ClO2产量、纯度、得率及总有效氯产量等指标进行测定与比较得出，在 0～0.6M Pa的常用压力下，压力的变化对二氧化氯发生器的产气效率无显著影响。

The influent factors to the sensitivity have been reaserched with the values of magnetostriction λ〓, the making and the size of the toroidal core's, heatreatment and so on, and the conversional mechanism between pressure and voltage have been discussed. The experience calculating formula of the sensitivity to pressures was concluded, and it will be useful to the designning and application of the force transducers.

对非晶带的磁致伸缩系数λ〓、环形铁芯的尺寸及制作、热处理等因素对压力—直流电压转换灵敏度的影响进行了研究，并对压力-电压转换的机制进行了探讨，总结出了压力-直流电压转换灵敏度的经验计算公式，对压力传感器的设计和应用提供了依据。

The results showed that:(1) The SARS' stressors for college students consisted of three components, namely the SARS stressor, the environmental stressor, and the stressor from copping with SARS.

结果表明：(1)大学生的非典压力源来自3个方面，它们是非典疾病压力源、非典信息压力源和应对非典措施压力源。

The results show that the value of burning rate pressure exponent of propellant and its change law can bring about a great change of interior ballistic behavior, The new type high-energy propellant whose burning rate pressure exponent is decrescent as pressure increasing can obtain higher interior ballistic piezometric efficiency, and reduce the sensitivity of bore pressure and muzzle velocity on loaded conditions of propellant.

结果表明，发射药燃速压力指数的大小及其随压力的变化规律对内弹道性能有很大的影响，对于燃速压力指数随压力升高而减小的新型高能发射药，可获得较高的内弹道示压效率，降低膛压和弹丸初速对发射药装填条件的敏感性。

The result makes clear: 1 index of pressure of Chinese farmland zoology is older, be in ascendant trend, its are main the reason is our country farmland the area decreases in great quantities continuously and population increases;2 farmland pressure quickly to save time difference bigger, the farmland pressure of southeast and southwest is apparent prep above is mid with heighten of grade of index of pressure of zoology of farmland of municipality directly under the Central Government of upper zone;3 and southeast ministry area, upper, northwest and mid major area exponential grade is invariant, only mid with the decrescent of grade of index of a few district, but not apparent.

结果表明：1近11年的中国耕地生态压力指数比较大，并处于上升趋向，其主要原因是我国耕地面积持续大量的减少和人口快速的增加；2耕地压力省际差异比较大，东南和西南地区的耕地压力明显高于中部和北部地区；3直辖市和东南部地区耕地生态压力指数等级增高，北部、西北和中部的大部分地区指数等级无变化，仅中部和东北部的少数地区指数等级变小，但并不明显。

Especially when dorsiflexion 20 degree goes to dorsiflexion 30 degree ,the contact stress arises 38%; when dorsiflexion 30 degree goes to dorsiflexion 40 degree ,it makes the contact stress arises 32%; when plantar flexion 20 degree goes to plantar flexion 30 degree ,it makes the contact stress arises 62%; when plantar flexion 30 degree goes to plantar flexion 40 degree ,the contact stress arises 23%.

由背屈20度变换成背屈30度时，其接触压力上升38%，由背屈30度变换成背屈40度时，其接触压力上升了32 %；掌屈20度变换成掌屈30度时，其接触压力上升了62%，由掌屈30度变换成掌屈40度时，其接触压力上升了23 %，与文献所载之趋势亦有相似之处。

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。