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First, developments related to modeling of components of the Ground Source Heat Pump system are presented-vertical ground loop heat exchanger, water source heat pump, standing column well, and several types of supplemental heat rejecters used in hybrid GSHP systems.

首先给出了地源热泵系统各部件建模方面的进展，包括竖直埋管地热换热器、单井循环系统以及在地源热泵混合系统中采用的几种辅助散热装置。

On the basis of analyzing the thermodynamic properties and cycle performance of pure refrigerants, the paper optimizes their concentration while screening NARMs used in wide variable-temperature heat source. The practical applications of NARMs, such as R22/R123, R123/R125 etc., are studied in geothermal heat pump, seawater heat pump, air dehumidification system and dual-evaporator domestic refrigerator. The results show that the NARMs can match the limitation of a pinch point at the air-side exit of heat exchanger, reduce the unreasonable heat transfer temperature difference, and improve the COP of system. The above conclusion is proved by measuring the cycle performance of R12, MP39 and R11/R22 in a two-evaporator experimental system.

其次，本文在工质热物性和变工况循环性能分析基础上，筛选和优化了适应外部大变温热源约束条件的非共沸混合工质及其浓度配比；讨论了相变温差较大的非共沸混合工质（如R22/R123、R123/R125等）在地热源供热热泵、海水源供热热泵、双门冰箱和热泵空气除湿的应用，计算分析表明制冷与热泵系统采用相变温差较大的非共沸混合工质有利于弱化传热过程的&窄点&的约束，减小传热过程中的不合理温差，提高系统COP值；通过建立双蒸发温度循环系统试验装置，对R12、R22/R11和R22/R152a/R124循环性能进行实验研究，结果与理论分析一致。

Main Products Agents have: import gas driven booster pump, liquid-driven booster pump, high pressure valves and pipe fittings, special-purpose processing tool.

主要代理产品有：进口气体驱动增压泵，液体驱动增压泵，高压阀门与管件，专用加工工具。

Piston pump first make clear the historical development of the Classification and again that the principle of the piston pump.

首先搞清楚柱塞泵的分类及其发展历史再说明了柱塞泵的工作原理。

The attainable pressure of the pump piston compressor is always considerably higher than the maximum pump pressure.

泵的内置活塞压缩机可达到的压力总是高出泵的最高压力许多。

Axial piston pump Body Pump is ZB40 one of the key components.

轴向柱塞泵泵体是ZB40柱塞泵的关键零件之一。

Internationally 70,80 on the shaft during the development of radial piston pump with flow valve to overcome the radial piston pump with flow deficiencies.

国际上70、80年代发展的轴配流径向柱塞泵克服了阀配流径向柱塞泵的不足。

Test tasks: to check whether the loose connector; hand plate coupling the rotor to move a few laps to see whether rotation and flexible unit, whether there is uneven sound and light and heavy feeling, to determine whether pump or foreign body axis is curved seals, such as the installation is correct; inspection seal on the 20th cavity clean lubricants are added 1 / 2 cavity space; pump unit surface is clean; unit no-load test shift.

试车工作：检查连接件是否松动；用手盘动联轴器使转子转数圈，看机组转动是否灵活，是否有响声和轻重不匀的感觉，以判断泵内有否异物或轴是否弯曲，密封件安装正不正等；检查密封腔内的清洁20号润滑油是否加注1/2腔内空间；泵机组表面是否干净；机组转向空载测试。

Test job: to check whether the connections loose; hand plate coupling the rotor to move a few laps, watch crew rotation is flexible, it has the sound and feeling of the severity of Unevenness to determine whether there is foreign body pump or shaft is bending, sealing the installation is not correct, etc.; inspection seal cavity clean lubricants on the 20th whether or not add 1 / 2 cavity space; pump unit surface is clean; crew turned no-load test.

试车工作：检查连接件是否松动；用手盘动联轴器使转子转数圈，看机组转动是否灵活，是否有响声和轻重不匀的感觉，以判断泵内有否异物或轴是否弯曲，密封件安装正不正等；检查密封腔内的清洁20号润滑油是否加注1/2腔内空间；泵机组表面是否干净；机组转向空载测试。

There are four main products rope, five-rope fast Dray, 0.5 T-5T fast, medium-speed hoist 12, 18-cutting machine, four to justice derrick, gasoline hand-ray machines, electric hand-ray machine, with two machines, vacuum suction Machine, Kewen machine, welding machine, welding machine, tunnels, bridges, reservoirs for the Pistons pump, injection pump, 350, 500, 750, the concrete mixer ingredients bucket, vertical 350-mixer, satellite mixer, mortar Machines, road cleaning machines, road paving machines, steel cutting machine, steel bending machines, bending machines hoop, Washidahang machine, fast-straight machines, machine vibration solidify, the impact ram, plate ram, the tower crane, build Block molding machines, loaders, rollers, and so full of construction equipment.

产品主要有四绳、五绳快速曳引机，0.5T-5T快速、中速卷扬机12型、18型切割机，四绳井架、汽油抹光机、电动抹光机、二用机、真空吸水机、刻纹机、电焊机、对焊机，隧道、桥梁、水库专用活塞泵、注浆泵，350型、500型、750型、混凝土搅拌机配料斗，立式350型搅拌机、卫星搅拌机、砂浆机、路面清灰机、路面铺平机，钢筋切断机、钢筋弯曲机、弯箍机、蛙式打夯机，快速调直机、震动夯实机、冲击夯、平板夯、塔机、砌块成型机、装载机、压路机等全套建筑设备。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。