泵杆

In oilfields,two-screw pump is a supercharging equipment used for oil-gas mixing delivery,and the back flow in it is an important factor influencing its performances.

双螺杆多相流混输泵是用于油气混输的增压装置，回流是影响多相泵性能的重要因素。

Professional operating various lathes, drilling machine, combination machine tool, milling machine, boring machine, planer, slotting machine, grinding machine, broaching machine, sawing machine, machine tool accessories, machine tool accessories, machine tool hydraulic parts, pneumatic components, ball screw, friction plate, chuck , card claw, various fixtures, cooling pumps, gear pumps, vane pump, variable pump, all kinds of machine friction plate, oil cups, glib, butter cups, oil cups, flat belts, ribbed belts, timing belt, the center frame, with the tool carrier, dividing head, legislative milling head, all kinds of commonly used air hammer parts, forging machine tool parts, punch parts, adjust the various specifications Sizing Block, V-frame, flat panel.

专业经营各种车床、钻床、组合机床、铣床、镗床、刨床、插床、磨床、拉床、锯床，机床配件、机床附件、机床液压件、气动元件、滚珠丝杆、摩擦片、卡盘、卡爪、各种夹具、冷却油泵、齿轮泵、叶片泵、变量泵、各种机床摩擦片、油杯、油嘴、黄油杯、机油杯、平皮带、多楔带、同步带、中心架、跟刀架、分度头、立铣头，各种气锤常用件、锻压机床配件、冲床配件、各种规格调整垫铁、V型架、平板。

And diaphragm compared to single-screw pump can transport all kinds of mixed impurity containing gas and solid particles or fibers of the media, but also transport all kinds of corrosive substances.

和隔膜泵相比，单螺杆泵可输送各种混合杂质，含有气体及固体颗粒或纤维的介质，也可输送各种腐蚀性物质。

The group's principal products include various kinds of single-head and multi-heads deep soil methed mixing pile machine, track drilling jumbo, static pressure pile machine, hammer pile machine, complex pile machine, screw pile machine, diaphragm wall drill machine for SMW method, rotatory drill machine, slurry pump, mortar pump, tap, drill rod, drill head, drill tool, construction material as well as textile machine and textile.

该集团公司的主要产品包括各种类型的单头搅拌桩机和多头搅拌桩机、各种类型的履带式凿岩台车、各种型号的静压桩机、各种类型的锤击桩机、各种类型的复合桩机、各种类型的螺旋桩机、各种类型的SMW工法的连续墙钻孔机、各种类型的旋挖钻机、各种类型的泥浆泵、沙浆泵、以及各种类型的水龙头、钻杆、钻头、钻具、建筑材料。还经营各种类型的纺织机械和纺织品等，我们还可以根据不同客户的要求和特点，设计不同的产品来满足客户的不用要求，我们可以为客户提供专业的服务。

This is a company specializing in the production of chemical equipment manufacturers, the main products are blenders, quantitative increase pump, screw pump, shredders.

本公司是一家专业生产化工设备的厂家，主要产品有搅拌机，定量加液泵，螺杆泵，粉碎机。

Study of experiment and numerical simulation of superheavy oil production by mixing light oil ;2. Based on the research of viscosity?temperature relationship of heavy oil, lifting technology in deep wells and mixing light oil for viscosity reduction, the feasibility of lifting technology of hollow rod is studied.

该文针对深层稠油油藏的特点，在对稠油粘温关系和深井举升工艺进行研究的基础上，结合实验室掺稀油降粘效果研究结果，对空心杆泵上和泵下掺稀油举升工艺的可行性进行了研究。

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可使柱塞在每一冲程中随机转动，不断地改变柱塞与泵筒的接触面，使柱塞圆周逐渐均匀磨损的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所引起的严重定位磨损及杆柱脱扣

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可以使柱塞在每冲程中随机转一下，不停地转变柱塞与泵筒的接触面，使柱塞圆周逐渐匀称磨耗的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所导致的紧张定位磨耗及杆柱脱扣。

The pump barrel and plunger wear their corrosion from the chemical composition of materials mechanical properties, mutual relations campaign, working environment and conditions and other factors.

而螺杆泵泵筒和柱塞各自的腐蚀磨损量则由构成材料的物理机械化学性能、相互运动关系、工作环境和条件等因素决定。

By the study,the authors find that the pressure distribution is characterized by "nonlinear" and the motion of pump valve is the same,too.

对有杆抽油泵泵阀运动规律的研究和确定抽油泵泵阀筒内液体压力的分布是提高抽油机井系统效率研究的关键性课题。

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％。