查询词典 pump drill

This thesis analyzes the types and art trait of solar-assisted heat pump water heater, the development trend of direct expansion solar-assisted heat pump water heater, makes a summary of these research results from six aspects. On the basis of these works and from the point of view of receiving optimum solar radiation , the thesis develops a novel design model of direct expansion solar-assisted heat pump water heater with a truncated cone collector/evaporator, theoretically analyzes the heat that the system can absorb, compares its ability with other two types of cylinder and flat plate ones, and calculates COP and EER with computer aids. The results show that a truncated cone direct expansion solar-assisted heat pump water heater can absorb not only more solar energy but heat energy in air. It takes on favorable thermal performance. Under the average day in February which is of the worst weather throughout the year in Kunming, the COP is about 4. 2, EER is about 2.9 . The heat absorbed by the system are more than those of the other systems. The system is very great in terms of saving

本文分析研究了太阳能热泵热水系统的分类及技术特点，直膨式太阳能热泵技术国内外发展趋势，从六个方面对直膨式太阳能热泵热水系统的研究进行了归纳总结；在此基础之上，从太阳辐射的最佳接收考虑，提出了集热器／蒸发器为圆台侧面的圆台型直膨式太阳能热泵热水器的设计模型，理论上分析了这种热水系统所接收的太阳辐射和得热量，并与圆柱型、平板型的直膨式太阳能热泵热水系统进行对比分析，通过计算机辅助模拟计算出：系统不但可以有效地吸收太阳能，还能有效地吸收空气中的热量，具有良好的热性能；在昆明，以2月为代表的冬季，其太阳辐照较低，系统的制热系数COP值也能达到4.2，效能比EER值为2.9；系统的得热量高出圆柱型、平板型的直膨式太阳能热泵热水系统，节能效果明显。

Sewerage pump pool must be installed at lower place,designed for discharging the castoff that producted by men in time.all the live draining water from the basement,such as basin,commode,washer machine,fabric pool,shower bath and bathtub so on contact with the sewerage pump pool ,and than drain into sewage well outside by passing through the watershoot,the pump pool should not have water ,or it will drunk the pump machine bad,make which can not operate normally.

对我来说有点难，请高人帮忙看看如何翻！急！污水泵池是为了及时排出生活中所产生的废弃物而设计的，必须安装在较低的位置。地下室所有的生活排水，如：面盆、恭桶、洗衣机、墩布池、淋浴间、浴缸等设施的排水都要经过排水管道与污水泵相连接，再通过排水管道直接排至室外污水井，泵池内不应有水，否则会泡坏污水泵电机，导致电机不能正常运行。

Our company's specialty is in producing Porlid Pump,turbine pump and Root blowers.We are always devoting ourselves in developing a new series of water pump and wind pump which makes up the disadvantage of pumps in industry,aquiculture and so on .

舟山市浦力德泵业有限公司是一家台商合资企业，地处东海之滨的海洋文化发祥地舟山，与国际大都市上海和中国东方深水良港北仑港相毗邻。

The mechanical pump is a direct drive rotary vane vacuum pump. It is used as a forepump for the diffusion pump, and to rough pump the degasser, the distillation, the distillate and the residue chambers.

机械真空泵直接驱动，为扩散泵预先抽取真空，也为了脱气，蒸馏，残留物收集器和蒸馏物收集器的抽取真空工作。

The stationary ring of the device is fixed on the cover of the pump, the rotating ring and the pump shaft are in the endwise slip connection. The elastic cell acts on the direction for the rotating ring to press the stationary ring, while the pump shaft outside the pump cover is hinged with the flying iron, of which the force transferring end acts in the direction for the rotating ring to deviate from the stationary ring.

本装置的静止环固定在泵盖上，旋转环与泵轴在轴向滑动连接，所配置的弹性元件作用于旋转环的压向静止环方向，泵盖外的泵轴铰接飞铁，飞铁传力端作用于旋转环的脱离静止环方向。

Owing to the fact that construction enterprise realized the usage superiority of long boom truck-mounted concrete pump gradually, at the same time ,owing to a large number of increment for small high-story buildings in city, quantity of truck-mounted pump with boom support length over 42m increases rapidly at commercial concrete market of Shanghai city since it started in the latter half of 2005, pump delivery price of 28 yuans per m3 also propelled fast development of long boom truck-mounted pump samely.

企业包袱沉重、机构人员臃肿、设备实力弱（2 1.5m3和2 1m3搅拌机组）等缺陷使省建混凝土公司在激烈的市场竞争中逐渐处于劣势。省建公司在南京市的工程本身就很少，这也使得混凝土公司全部对外经营，享受不到任何大树底下好乘凉的美妙感觉。

This removal of air from the pump casing produces a partial vacuum on the pump inlet ,here the fluid is trapped between the teeth of the upper and lower gears and the pump casing .continued rotation of the gears forces the fluid out of the pump discharge .

这种泵内空气运动使泵吸入口处形成了真空，于是外部油箱的液体在大气压的作用下，由泵的入口进入，聚集在上下齿轮和泵壳体之间，齿轮连续的旋转使液体流出泵的出口。

It widely serves as fresh water and seawater cooling pump, burr pump, ballast pump and general pump, and used for seawater desalting device and marine pressure cabinet.

广泛应用于淡水和海水冷却泵、舱底泵、压载泵、消防泵、日常总用泵等。

It widely serves as fresh water and seawater cooling pump, burr pump, ballast pump and general pump, and used for seawater desalting device and marine pressure cabinet.

CSL 系列船用立式中开双吸离心泵是我公司近年开发的新产品，由船用电机驱动，适用于大型船舶作压载泵、消防泵、总用泵及液货输送泵。

In a vacuum system, the pump can be used alone or as a booster pump, diffusion pump, such as the pre-pump.

在真空系统中，这种泵可单独使用，或作为增压泵、扩散泵等的前级泵。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&