Connect the vacuum pump to the compound pressure gauge; open the compound pressure gauge and vacuum pump to vacuum the indoor unit and connecting pipe.
将真空泵连于复合压力表，打开复合压力表和真空泵对室内机和连接管抽真空。
The addendum coefficient is an important parameter in the designing the gear, and to affect the discharge characteristic of compound gear pump.
齿顶高系数是设计齿轮时的重要几何参数，也是影响复合齿轮泵流量特性的重要参数之一。
Especially the flow of compound impeller in the centrifugal pump at low specific speed is more complex and has more problems need urgently to resolve.
尤其是低比转速复合叶轮离心泵内部的流动更加复杂，亟待解决的问题也更多。
Vacuum pump is a vacuum distillation of the core of the compounds according to the boiling point to be distilled and compound use, choose the appropriate pump.
真空泵是减压蒸馏的核心部分，根据待蒸馏化合物的沸点和化合物的用途，选用适当的真空泵。
The multifunctional pump has many regulative functions, such as constant pressure, constant flow, constant power, and pressure-flow compound control, etc. It may be widely used in industrial field.
所开发的多功能泵具有恒压力、恒流量、恒功率及压力流量复合控制等调节功能，有着广泛的工业实用性。
The construction and principle of the balanced compound gear pump is introduced.
介绍了平衡式复合齿轮泵结构原理。
The multifunctional pump has many regulative functions, such as constant pressure, constant flow, constant power, and pressure-flow compound control, etc.
所开发的多功能泵具有恒压力、恒流量、恒功率及压力流量复合控制等调节功能，有着广泛的工业实用性。
Introduced are some problems concerning the design of compound phosphate fertilizer thick liquid pump in the light of its structure, hydraulic design, and sealing.
从结构型式、水力设计、密封型式等方面论述了磷复肥料浆泵设计的有关问题。
The inner leakage, as the major factor, affects the efficiency of the cubage of the balanced compound gear pump.
平衡式复合齿轮泵的内部泄漏是影响其容积效率的主要原因。
Balanced compound gear pump is a new king of hydraulic pump which combines ring gear with external gear pump.
复合式平衡齿轮泵是将内外齿轮泵融为一体的新型液压泵。
The Structure of Lining vane and safety board for slurry pump, compound property, formula, production technology, mold design, practical use and advantages are introduced in present paper.
简介泥浆泵衬胶叶轮和护板的结构，胶料性能、配方、生产工艺、模具设计、实际使用状况、优点等。
The vacuum system USES a compact vacuum pump group and compound gauges with wide measuring range and good hermetization.
真空系统采用复合真空计及真空机组，测量范围宽、设备紧凑、密封性能好。
This paper analyzes the flow pulsation in a compound gear pump with 2-idlers, derives formulae for calculating displacement, average flow velocity, instantaneous flow and pulsation flow.
讨论了二从动轮式复合齿轮泵的结构原理，导出了排量、平均流量、瞬时流量和流量脉动率的计算公式。
The strong points of the compound gear pump are balanced hydraulic pressure of radius, uniform of flow rate, small volume, large displacement and low noise and so on.
它具有径向液压力平衡、流量均匀性好、噪声低、排量大、体积小等优点。
The strong points of the compound gear pump are balanced hydraulic pressure of radius, uniform of flow rate, small volume, large displacement and low noise and so on.
它具有径向液压力平衡、流量均匀性好、噪声低、排量大、体积小等优点。
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