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。
A single heat pump unit or more of the noise control.
单台或多台热泵机组的噪声治理。
Foreign advanced pump unit, efficiency can exceed 90%.
国外先进的水泵机组，效率可超过90%。
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。
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。
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。
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 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。
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。
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。
Through piping model test and pump unit trial it is shown that with the two types of isolating shims the vibration acceleration of the piping system can be reduced evidently.
经管路模型试验和水泵机组试验证明，这两种隔振垫可使管路系统振动加速度级明显下降。
Presents main reasons of the compressor damaged in winter by analyzing an accident of the wind cooling heat - pump unit. Gives some Suggestions for the user and the producer.
通过对一起风冷热泵机组压缩机损坏事故的分析，提出机组冬季损坏的主要原因，并提出一些意见和建议供用户和生产厂家参考。
This paper presents the principle of MDV system and explains its advantages in architecture energy saving through comparing with air-cooled heat pump unit in operation economy.
本文阐述了MDV系统的原理，通过与风冷热泵机组在运行经济性方面的比较，充分说明了MDV系统在建筑空调中的优势。
The results show that guide bearing load of large vertical water pump has something to do with inlet passage of pump station, pump unit manufacture and installation quality, structure pattern.
研究结果表明：大型立式水泵导轴承荷载与进水流道和机组制造安装质量、结构形式有关。
The results show that guide bearing load of large vertical water pump has something to do with inlet passage of pump station, pump unit manufacture and installation quality, structure pattern.
研究结果表明：大型立式水泵导轴承荷载与进水流道和机组制造安装质量、结构形式有关。
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