查询词典 low pressure

I see four kinds of pressure working on college students today: economic pressure, parental pressure, peer pressure, and self-induced pressure.

我发现有四种压力影响着今天的大学生：经济上的压力，父母的压力，同伴的压力，和自己导致的压力。

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。

The first, do the research on pressure automatically generating device and control method, put forward a kind of standard pressure method of certain steps, and could occurrence pressure accurate, fast, stabilize and have no super adjust of creation which is pressure calibration instrument need; The second, aim at present conditions that a great deal of transducer and pointer gauges are all of applied, the automatically read system is researched, the automatical read system of pointer gauge become true by the method of image processing; The third, do the research on the temperature drift of standard pressure sensor, and carrying on the temperature compensation by linear of vicariate interpolation for improving measure accuracy.

采用图象处理的方法实现了对指针式压力仪表示值的自动判读；三是对标准传感器的温度漂移特性进行了研究，采用二元线性插值法进行补偿，以提高标准传感器的测量精度。

Results: Our experiments demonstrated the following distribution of blood pressure in the cardiovascular system of rat.(1) The left ventricular systolic pressure was 145.00+15.16 mmHg and the aortal systolic pressure was 126.87+11.16 mmHg. The LVSP was higher than ASP. The right ventricular systolic pressure was 35.04+3.95 mrnHg and the pulmonary arterial systolic pressure was 27.0313.46 mmHg.

结果：本实验得出大鼠心血管系统内血液压强的分布及其特点为：(1)左室收缩压为(145.00±5.61)mmHg，主动脉收缩压为(126.87±11.16)mmHg即LVSP高于ASP；右室收缩压为(35.04±3.95)mmHg，肺动脉收缩压为(27.03±3.46)mmHg，即RySP高于PASP。

Blood pressure should be reduced to normal level to prevent heart and cerebral vessels to occur arteriolosclerosiswhen the blood pressure of hypertensive patient is not very highor the duration of illness is short. when blood pressure rises very high or the course of disease is long, blood pressure should be lowered to slightly higher than normal blood pressure level, so it can prevent arteriolosclerosis to be deteriorated further and can prevent the occurence of cerebral ischemia and infarction.

在血压升高幅度不大或起病不久的高血压患者，治疗时应将血压降至正常水平，以预防心脑血管发生动脉硬化；在血压升高幅度大或病程长者，治疗时应将血压降至比正常血压稍高的水平，即要防止动脉硬化进一步加重，也要预防脑缺血和脑梗塞的发生。

The reliability of analysis result depends largely on the in-house experimental conditions. Unlike the previous analysis that only concerns the sole effect of permeable pressure, this article considers both permeable and confining pressure and deformation characteristics of concrete material under the interaction of them according to the real work state of construction, which may leads to the changing pattern of permeable rate as listed below: permeable rate always reaches its peak with the time process going on, than goes down and remains straight on some certain value; The PR will tend to decline while the confining pressure is increased, and the time taken before the peak will be extended as well; Under the constant permeable pressure and circularly changing confining pressure, the minus-exponential ascend and descend relationship could be applied between the PR and Time axes respectively with crannied and intact concrete samples, and the PR of crannied concrete is far more larger than that of intact concrete. The change pattern of concrete could also be mathematically analogized using the least square method.

室内的实验条件是研究成果可靠性的重要因素，而以往的研究都只考虑了渗透压单一作用，本文根据混凝土结构的实际工作状态，同时考虑了围压与渗透压共同作用下的混凝土材料的渗透性变化特征，得出了混凝土材料在围压作用与渗透压共同作用下的渗透率的变化规律：渗透率都是随时间推移先达到一个峰值，再降低并趋于平稳；渗透率会随围压的增大而减小，并且峰值的到达时间也会随之延长；在渗透压不变，围压升降循环的情况下，有裂缝、无裂缝混凝土的渗透率变化规律是随时间成负指数关系上升、下降，且有裂缝混凝土试件的渗透率远远高于无裂缝混凝土的渗透率，并对混凝土的变化规律运用最小二乘法进行数学拟合。

Oscillometric method is the advanced method for the no invasion blood pressure measurement. It qualitatively provides the order of the pulse pressure signal's changing with the cuff pressure and quantificationally points out the relationship between the mean blood pressure value and the pulse wave signal. So this method gives us a more scientific way to find other blood pressure parameters.

测振法是无创血压测量中先进的检测方法，它定性地揭示了脉动压力信号随袖带压力变化的规律，并给出了平均压与脉搏波信号的定量关系，为血压参数进一步确定提供了一条更为科学的方法。

The plastic hinge model of perforated liner casing is built up to calculate the collapse pressure according to the strength and deformation behavior of perforated liner casing subjected to external pressure. The calculation equations of collapse pressure of perforated liner casing with initial ovalization are deduced by energy method. The influences of phrase angle, diameter of perforation, shot density, initial ovalization, diameter-thickness ratio and yield stress on the collapse pressure of perforated liner casing are studied. The model and equations are used to calculate the collapse pressure of an actual perforated liner casing as example.

摘摇要：根据煤层气完井筛管受力特点建立了筛管受力的塑性铰模型，利用能量法推导出带有初始椭圆度筛管抗挤强度的计算公式，分析了相位角、射孔直径、射孔密度、初始椭圆度、径厚比和屈服强度等影响因素对筛管抗挤强度的影响规律，并对某煤矿使用的筛管抗挤强度进行了计算，与已有的实验数据和有限元计算结果进行了对比。

The plastic hinge model of perforated liner casing is built up to calculate the collapse pressure according to the strength and deformation behavior of perforated liner casing subjected to external pressure. The calculation equations of collapse pressure of perforated liner casing with initial ovalization are deduced by energy method. The influences of phrase angle, diameter of perforation, shot density, initial ovalization, diameter-thickness ratio and yield stress on the collapse pressure of perforated liner casing are studied. The model and equations are used to calculate the collapse pressure of an actual perforated liner casing as example.

根据煤层气完井筛管受力特点建立了筛管受力的塑性铰模型，利用能量法推导出带有初始椭圆度筛管抗挤强度的计算公式，分析了相位角、射孔直径、射孔密度、初始椭圆度、径厚比和屈服强度等影响因素对筛管抗挤强度的影响规律，并对某煤矿使用的筛管抗挤强度进行了计算，与已有的实验数据和有限元计算结果进行了对比。

The zonality of abnormal pressure is closely correspondent to the breakthrough pressure (or pressure preservative ability) of mudstones in the Dongying Sag. The breakthrough pressures and formation fluid pressure coefficients rise with increasing depth. The preservation of isolated mudstone intervals is also important to the abnormal pressure formation.

东营凹陷异常压力的分带性与泥岩的突破压力具有明显的对应关系，随着深度增加，泥岩突破压力及地层流体压力系数均增大，泥岩封隔层对流体压力的保存也是形成异常压力的重要条件。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。