Centrifugal pumps are used usually as pump unit in crude oil transportation engineering.
在原油输送工程中，常用离心泵作为原油输送泵组。
The advantages and disadvantages of screw compressor ammonia-pump unit are analyzed also.
论述了螺杆氨泵机组的优缺点。
Takes a heat pump unit to calculate by the model. Obtains its performance under frosting condition.
根据该模型选择某种热泵进行了计算，得到了该热泵在结霜工况下的性能。
The experiments for different airflow were conducted on an air-to-water heat pump unit and discussed.
采用试验方法研究了风量变化对中大型风冷热泵机组结霜工况性能的影响。
But all this depend on the steady, safe and highly efficient running of ground source heat pump unit.
但是，这又依赖于热泵机组的稳定、安全、可靠、高效的运行。
The characteristics of centrifugal pump unit given by pump specimen are obtained by testing with water.
泵样本上给出的离心泵组的特性都是用水试验得出的。
When repairing the pump unit, install the plug attached to the service part to prevent ink from spilling.
当修理泵部件时，要安装泵的附件，以防止墨水泄漏。
Heat pump unit has been widely used both at home and abroad for its characteristics of economy and energy saving.
热泵机组以其明显的节能意义和经济价值在国内得到了广泛的应用。
Check 3-way fuel oil selection valve located before fuel oil pump unit and change the 3-way valve to MDO/MGO side.
检查位于燃油输送泵前的三通燃油切换阀，并转换到MDO侧。
The circulating pump unit can measure the return water temperature and determine whether to start the circulating pump.
循环泵装置可测量回收到的循环水温度，而且根据测量的温度决定是否启动循环泵。
Imersion oil electric pump unit is a kind of oil jack with rodless deep extraction, large discharge capacity and high lift.
潜油电泵机组是一种无杆深抽、排量大、扬程高的抽油设备。
This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressure distillation.
本文介绍适用于干式减压蒸馏的特殊结构真空抽气设备。
The maintainability of large pump unit influences the maintenance time, maintenance expense, and maintenance quality directly.
大型水泵机组的维修性直接影响维修时间、维修质量和维修费用。
An intelligent logical control program is installed for the unit in order to automatically control the speed of the beam-pump unit.
在系统内安装了智能化的逻辑控制软件，可针对油井实际状态自动调整抽油机的工作摸式。
Results are significant to reasonable design and selection of large step pump stations, structures and functions of pump unit equipments.
成果对大型梯级泵站形式和机组设备结构功能的合理设计选型有重大意义。
The spray pump unit (100) also has an air source (180) for providing power to the pump and air to deliver the texture material from the gun.
喷涂泵单元（100）还具有空气源（180），该空气源用于提供动力给泵，并提高空气，以从喷枪输送纹理材料。
The steady mathematic model of water source heat pump unit for small house is established, and the characteristics of the unit are simulated.
建立了小型住宅用水源热泵机组稳态数学模型，对机组特性进行了模拟。
The differential equation of pump station start-up transient is established and derived from discharge balance and moment equation of pump unit.
本文从水量平衡及水泵机组力矩方程出发，建立起水泵从起动到同步的微分方程序。
We try to optimize the design variable condition calculation, heat pump unit heat transfer area of the parts and the parts heat load calculation.
进行优化设计、变工况计算、热泵机组各部件传热面积和各部件热负荷计算。
This paper presents associated technology design and application of a dredge pump unit in the rehabilitation project in Cline Shipyard, Sierra Leone.
在塞拉利昂克莱恩船厂滑道改建工程中，对吸泥泵组的配套工艺设计及使用情况作以介绍。
A general steady-state simulation model was presented for predicting the performance of air source heat pump unit in low ambient operating conditions.
本文利用已建立并通过实验验证的空气源热泵机组稳态仿真数学模型，对机组在新工况与常规工况下的低温稳态特性进行了计算机仿真。
The dynamic system model is coupled with geothermal heat exchanger model and heat pump unit model, which is based on the conservation of mass and energy.
采用确定性模型法建立了热泵机组的模型，然后通过能量和质量守衡方程序建立了系统动态耦合模型。
In underground water source heating pump air-conditioning system of one guesthouse project, the heating pump unit does not always run at full load status.
某宾馆工程地下水源热泵空调系统中，热泵机组在实际运行中不总处于满负荷运行状态。
Based on the characteristics of pump assembly, the influences of hydraulic resistance of trash rack and feculence on pump unit operation are investigated.
根据水泵装置特性研究了拦污栅及其污物阻水对泵机组运行的影响。
The authors point out that only after selecting rational operating mode and control mode of pump unit can the safe and steady operation of pipeline be ensured.
提出只有选择工艺合理的泵机组运行方式和控制方式，才能实现成品油管道的安全平稳运行。
Result calculated by the mathematics model indicates that pipeline capacity decreases as the length of pipeline increases and reliability of pump unit reduces.
该数学模型计算的结果表明，管道的输送能力随泵机组可靠度的降低和管道长度的增加而减小。
The guide bearing is the key part of a large water pump for its grindability. Its failure rate is very high, and its failure is above 50% of pump unit failure.
导轴承是大型水泵最为关键的易磨易损部件，故障率高，导轴承故障占泵机组故障的50%以上。
Analyses the effect of U-tube diameter, tube quantity in each hole, and the design inlet water temperature of a heat pump unit on the heat exchange capability.
分析了U形管管径、单孔内u形管数量及热泵机组设计进水温度对换热器换热效果的影响。
Each separate arrangement consists of one (1) pump unit connected to two (2) double acting side-launching cylinders and one (1) double acting launching cylinder.
每台系统包括1台油泵连接2台双向液压油缸和一台双向液压推进油缸。
Each separate arrangement consists of one (1) pump unit connected to two (2) double acting side-launching cylinders and one (1) double acting launching cylinder.
每台系统包括1台油泵连接2台双向液压油缸和一台双向液压推进油缸。
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