back-pressure是什么意思

网络释义

用法例句

The conventional seepage flow experimental equipment was reformed by additional back-pressure controlling system in the end of core holder.

本实验在常规渗流实验岩心夹持器末端增加了一套回压控制装置,渗流实验过程中,通过给岩心施加不同的回压,模拟了储层在变压条件下的流体渗流情况。

To figure out these curves in a time-saving way,this paper derived equations to calculate relative permeability of water displacing gas by experimental data,and also designed a set of back-pressure equipment to measure relative permeability of water displacing gas under unsteady-state conditions.

为此,根据地下水动力学原理推导了利用实验测定数据计算水驱气相对渗透率的公式,并设计了一套回压装置进行非稳态水驱气相对渗透率测这的新方法,用某气藏的真实岩心在该装置上进行水驱气相渗透率曲线的测定,其结果和用稳定法测定的结果比较吻合,证明了所建立的非稳定法测试装置和计算公式是可行的,突破了水驱气相对渗透率曲线只能用稳定法的传统方法,使气水相对渗透率的测定具有快速、准确的特点。

Improvement of hydraulic circuit for the change of mill support roll;

轧机支承辊换辊装置液压回路的改进

Development of virtual hydraulic circuit system using Flash;

基于Flash建立的虚拟液压回路系统的研制

Simulation study on hydraulic circuit of light type hydraulic excavator based on AMESim

基于AMESim的小型液压挖掘机液压回路仿真研究

In this paper,through theoretical analysis,considering gas frictional pressure drop and pressure regain in diverging section due to droplet′s dece.

通过理论分析,在考虑气体摩擦压力损失和扩散段液滴减速压力回收的基础上,推导出了1个简单、准确的文丘里洗涤器压力损失模型。

floating in casing

下部装回压阀的套管柱

constant pressure regenerative cycle

定压[等压]回热循环

echoed the closely-packed ranks of the crowd.

黑压压的人层来了回声。

Hamilton standard motor

径向回转柱塞液压马达

CNC turret punching press

数控冲模回转头压力机

numerical controlled turret punch press

数字控制回转头压力机

multi-vane rotary compressor

多滑片回转式压缩机

hydraulic relay valve return spring

液压式继动阀回动弹簧

Mathematical Modeling of Rotary Compressors

回转压缩机数学模型

Pressure Setting of Press-keeping Clamping Circuit Based on Accumulator

基于蓄能器保压夹紧回路的压力设定

Discharging Mode Selection of Hydraulic One Way Valve Controlled Pressure-holding Circuit

液控单向阀保压回路的释压方式选择

Mehanism Study on Fluid Power System Based on Fast On-off Valves for NC Turret Presses

液压快速回转头压力机液压系统机理研究

For a central gas installation, one oxygen and acetylene outlet station in the workshop, complete with low pressure regulator, pressure gauges and backfire valves.

低压布置在工作间，主要设备包括低压减压阀，压力表和回火器。

500 kV double-circuit transmission line tower with a single power back to the induced voltage research

500 kV同塔双回线路单回停电感应电压研究

4)Due to the steep rise of water level, the pressure induced by the reflected bore wave is much greater than the pressure induced by the initial bore wave.

4 )回头潮压力远大于正面第一涌潮波压力 .

Study on Springback of High Pressure Compaction Sand Molds and the Mechanism of Springback;

高压压实砂型回弹的研究及其机理的探讨

Analysis of secondary voltage loss caused by 220kV bus voltage switchover

220kV母线电压切换引起二次回路失压事故分析

Simulation study on hydraulic circuit of light type hydraulic excavator based on AMESim

基于AMESim的小型液压挖掘机液压回路仿真研究