泵

Electromagnetic diaphragm metering pump is a type of metering pump, metering pump is a measurement by the special volume of fluid delivery pump.

电磁隔膜计量泵是计量泵的一个种类，计量泵是一种可以计量被输送流体的特殊容积式泵。

Electromagnetic diaphragm metering pump is a type of metering pump metering pump is a measurement by the special volume of fluid delivery pump.

电磁隔膜计量泵是计量泵的一个种类，计量泵是一种可以计量被输送流体的特别容积式泵。

With the piston pump, diaphragm and gear pumps is different is that single-screw pump can be used for pharmaceutical filling and measurement.

和齿轮泵相比，单螺杆泵可输送高粘度的物质。与柱塞泵、单螺杆泵及齿轮泵不同的是，单螺杆泵可用于药剂填充和计量。

It is considered that link wear speed on seal surface is proportional to the contacting pressure. The impacting of valve disk on valve seat is the important reason of abrasive wear, and the relative motion of disk is a main reason for errosion wear of pump valve. The cycles per minute is an important factor to influence the valve motion and the impact force.

结果表明，泵阀密封面联接磨损的磨损速度与密封面上的接触比压成正比，泵的冲次是影响阀盘运动规律及对阀座产生冲击的重要因素，泵阀产生磨粒磨损和疲劳磨损的主要原因是泥浆、阀盘和阀座的冲击，冲蚀磨损导致泵阀的刺蚀。

Based on the theory on the design of the solid liquid two-phase flow centrifugal pumps and considering the characteristics of the soil under water and the operation characteristics of the dredge pump, the design method of the dredge pump impeller is presented, the corresponding Visual Basic program is developed and the solid model of impeller is also created by using Pro/E. The parameterized design of the slurry pump is realized.

本文在现有的固液两相流泵设计理论的基础上，针对疏浚工程土质特性和疏浚泥泵工作特点，提出了疏浚泥泵叶轮的设计方法，开发了相应的Visual Basic程序，并应用Pro/E进行了叶轮实体造型，实现了疏浚泥泵叶轮的参数化设计。

An ejector or jet pump motor may be a separate unit mounted on the pump or the end bell of the motor may be part of the pump.

引射泵或射流泵的发动机可能是在泵上悬挂的一个独立单元，或者发动机的端盖是泵的一部分。

It also describes pumping performance of this cryopump applied to three different type of vacuum coaters, ion implantation device and its condition underwent thermal shock.

本文扼要地介绍了低温泵的抽气原理及其主要的性能参量，同时叙述了ZDB型低温泵用于三种真空镀膜装置和离子注入机的抽气特性及承受热冲击的情况，用低温泵抽气系统所得膜片的性能比扩散泵抽气要好得多。

The invention adopts a semiconductor laser or other pumping lights, such as a LED light, to pump the etalons, optical elements and wave plates made of optical materials which can absorb the pumping light, and regulates the output power of the pumping light to change the temperature of transmittance zones of the etalons, wave plates and optical elements so as to realize the changing of transmission wavelength of the etalons, the quick changing of wave plate phase and the quick changing of optical length of optical elements.

本发明采用半导体激光或其他泵浦光如LED光泵浦由可吸收泵浦光的光学材料制作的标准具、光学元件、波片，由调节泵浦光输出功率改变标准具波片、光学元件透光区域的温度，从而实现标准具透过波长的改变、波片相位快速变化，光学元件光学长度快速变化。

As the molecular pump pumping speed for water vapor is only with the diameter cryopump pumping speed of the quarter, so molecular pump exhaust pump longer time than low temperature.

由于分子泵对水蒸气的抽速仅为同口径低温泵抽速的四分之一，所以分子泵的排气时间比低温泵长。

At present, the seal-type multi-stage vacuum pump is the most widely used access technology, a pump, it can be used as a separate low-vacuum equipment to the exhaust pump, it can be used as high-vacuum exhaust pump, when the first class, formed into a high demand for multi-stage pump.

目前，油封式多级泵是国内真空获得技术中应用最广的一种泵，它可单独用作低真空设备的排气用泵，也可用作高真空排气时的前级真空泵，组成成高要求的多级泵。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。