查询词典 pressure bar

At the instrumentation products, are the United States Dwyer, Antunes Controls, AutoTran, Lighthouse, Sweden SenseAir, Switzerland BELIMO, Germany Beck's authorized dealers, etc., these products include pressure switch / pressure switch, pressure change delivery, and pressure gauge / pressure table, temperature / humidity / dewpoint sensors, liquid level, flow meters, flow switches and transmitters, carbon dioxide, carbon monoxide sensors, airborne particle counter and so on, are widely used in HVAC , air-conditioning, chip manufacturing, semiconductor, food, pharmaceutical, bio-engineering, intelligent buildings, power plants, chemical industry, water treatment, environmental monitoring, industrial manufacturing and other fields, while the company is gradually taking shape self-developed product line.

在仪器仪表产品方面，是美国Dwyer、 Antunes Controls、AutoTran、Lighthouse、瑞典SenseAir、瑞士BELIMO、德国Beck等公司的授权代理商，这些产品包括压力开关/压差开关、差压变送器、压力表/压差表、温度/湿度/露点传感器、液位、流量计、流量开关及变送器、二氧化碳、一氧化碳传感器，尘埃粒子计数器等，广泛用于暖通、空调、芯片制造、半导体、食品、制药、生物工程、智能楼宇、电厂、化工、水处理、环境监测、工业制造等领域，同时公司正在逐步形成自主开发的产品线。

As the plastic region expansion on circle plate under extemal pressure is smaller than that under equal internal pressure, it can be qualitatively reckoned that the critical pressure of in-plane instability under external pressure is higher than that under internal pressure with the same axial displacement load.

由于外压增量导致环板内塑性区域扩展的范围小于等值内压的影响，因此可以定性的认为，在同样的轴向压缩量下，波纹管的平面失稳外压临界压力大于内压临界压力。

Based on the testing analysis of microcosmic digital image, there are smaller Fissions, higher density and even distribution under high confining pressure than under low one. Microcosmic damage mechanics of rock cracking under high confining pressure and hydraulic pressure is given. Reliable testing basis is offered to analyze further failure and stability of the noncircular cave surrounding rock under high confining pressure and high hydraulic pressure.

通过微观数字图像试验分析发现，高围压条件下大理岩断口裂纹长度小、密度大、分布相对均匀，给出高水压高围压作用下岩石破裂产生的微观损伤力学机理，为进一步分析高围压高内外水压条件下非圆形洞室围岩失稳破坏机理提供了可靠的试验依据。

Industrial enamel factory production equipment performance glass keep out the professional standards in line with the country,"glass-lined equipment and test methods" First, second-class pressure vessels and equipment in line with the country "Steel Pressure Vessels" standard, and have achieved one, second-class pressure vessels (including the lining glass pressure vessel) and a manufacturing license, second-class pressure vessel design qualification certificates; Hunan Province are the only factory producing glass-lined equipment, according to the user's special needs to provide quality services.

工业搪瓷分厂生产的搪玻设备性能符合国家专业标准《搪玻璃设备及试验方法》一、二类压力器符合国家《钢制压力容器》标准，并取得了一、二类压力容器制造许可证及一、二类压力容器设计资格证；是湖南省唯一生产搪玻璃设备的厂家，可按用户的特别需要提供优质服务。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

第二章讲述的是该有效应力原理的一些工程应用研究，通过该研究，我们取得如下成果：（1）建立了上覆岩层压力、孔隙流体压力、基岩应力之间的解析关系式；（2）推导出了饱和土体孔隙度与孔隙水压之间的非线性关系式，该关系式与多孔介质的初始状态及初始孔隙水压有关；（3）建立了基于多孔介质的岩石剪切强度理论和岩石破裂压力计算公式。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

笔者在第一章中提出，在建立多孔介质的有效应力原理时，必须考虑其细观结构，并解析推导出了基于多孔介质之上的饱和多孔介质有效应力原理。该原理包含了孔隙度φ这一表征多孔介质结构性的重要参数；并体现了孔隙流体与固体骨架对总应力的分担作用，分担比例为φ：（1-φ）。

When the load smaller than the first outlet pressure adjustment valve set pressure, pilot valve Poppet head off an oil chamber, oil chamber 2 is equal to the pressure on the outlet pressure, the main valve of the sliding shaft 2 inside the cavity in the oil a rigid under the action of a small spring at the lowest position, the main valve and the valve slider protruding shoulder posed by all the valve port opens, pressure reducing valve without decompression.

当负载较小，出口压力低于先阀的调定压力时，先导阀的提动头关闭，油腔1、油腔2的压力均等于出口压力，主阀的滑轴在油腔2里面的一根刚性很小的弹簧作用下处于最低位置，主阀滑轴凸肩和阀体所构成的阀口全部打开，减压阀无减压作用。

For stainless steel precision pressure meter, based on normal precision pressure meter, the pressure connecting system and its outer housing is made of stainless steel, used to measure pressure or negative pressure of various gas or vapor mediums in technological processes with higher requirements of corrosion resistance.

不锈钢精密压力表在普通精密压力表的基础上导压系统及外壳均采用了不锈钢材料。应用于耐腐蚀要求较高的工艺流程中对各种气体或蒸汽介质的压力和负压的测量。

A pressure indicator (56) provides a visual indication of the fluid pressure within the transfer device (12), and a pressure relief valve (56) provides for a release of the fluid if the pressure exceeds a predetermined pressure.

一压力指示器56在传送装置12内提供流体压力的可视指示，压力安全阀56，在压力超过预先确定压力时，将流体释放。

The space between the frangible disc and the pressure relief valve shall be provided with a vent valve, pressure gauge or suitable tell-tale indicator for the detection of disc rupture, leakage, and release the accumulated pressure between the space to prevent the pressure affect to it's setting pressure.

安全阀与爆破片之间的腔体应设置排气阀、压力表或其他合适的指示器等，用以检查爆破片是否渗漏或破裂，并及时排放腔体内蓄积的压力，避免因背压而影响爆破片的爆破压力。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。