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- A wood screw will fill the breach until you can buy the proper bolt for the job. 在你能够买到合适插销以前，先用一枚木螺丝替代一下。
- LGB screw pump is corrosion-resisitant . 并具有耐腐蚀性。
- Figure 1 express cutaway view of the three screw pump. 图1表示三螺杆 泵的剖视图。
- The computing procedure of all profiles design for double screw pump has been. 介绍了双螺杆泵各类型面设计的计算机设计程序。
- SLOTTED OVAL HEAD WOOD SCREWS B.S. 英制开槽半沉头木螺钉。
- SLOTTED ROUND HEAD WOOD SCREWS B.S. 英制开槽圆头木螺钉。
- CROSS RECESSED COUNTERSUNK HEAD WOOD SCREWS B.S. 英制十字槽沉头木螺钉。
- An automatic control system of screw pump is introduced in this paper.Accident is avoided while the screw pump works without slurry. 介绍了一种螺杆泵电气自动控制系统，成功地避免了螺杆泵在无矿浆状态下运行造成的毁坏事故。
- Main production gear pumps, screw pump, pump, high viscosity rotor pump. 主营生产齿轮泵、螺杆泵、离心泵、高粘度转子泵。
- PCM screw pump was used immediately after steam injection in Well Shu 1-39-036 and achieved initial success. 在曙1-39-036井注汽结束后直接采用PCM螺杆泵生产，获得阶段性成功。
- BRITISH STANDARD Slotted Round Head Wood Screws B.S. 英制一字槽、十字槽圆头木螺钉。
- Various types of self-drilling screws, wood screws and rivet nuts! 各类头型类鉆尾钉和木螺钉及铆螺母!
- Wood screws are made in a wide variety of diameters and lengths. 木螺钉的直径和长度各异。
- Machinery and other production methods, screw pump system is characterized by a higher system efficiency, a study of its great significance. 与其它机械采油方式相比，螺杆泵采油系统的突出特点是系统效率较高，对其进行研究意义重大。
- Our factory take the processing screw rotor as startinr points,developed the type of screw pump,screw spindle compressor,screw freezer. 我厂以螺杆转子加工制造备件起点，开发螺杆泵系列产品，螺杆式压缩机、冷冻机主机。
- According to the energy loss of every part of screw pump well,established system efficiency analysis model for the well. 根据螺杆泵井各个部分运动特点及能量损失情况,建立了螺杆泵井系统效率分析模型。
- An eccentric screw pump was used in place of centrifugal pump for conveyance of scum, so as to solve the clogging of the latter. 用偏心螺杆泵替代离心泵输送浮渣来解决离心泵堵塞的问题。
- For the disadvantage and shortage, thefour-location oil field screw pump rubber stator injection-vulcanization unit is newlydesigned. 针对其存在的缺点与不足，全新设计了四工位油田螺杆泵橡胶定子注射硫化机组。
- Chipboard screw,drywall screw,tapping screw,self-drilling screw,window screw,fermacell screw,cutting point screw, wood screw,machine screw,concrete screw,confirmat screw,kinds fasteners, packaged fasteners. 纤维板螺丝;墙板钉;自攻螺丝;自攻自钻螺丝;窗用钻尾螺丝;割尾螺丝;木螺丝;机螺丝;水泥螺丝;家俱螺丝;各种螺丝;各种螺栓;螺母;各种紧固件;各种小包装紧固件.
- This pump is mainly comprised of 4-pole submersible electric motor, protector, connecting mechansim and special screw pump assembly. 它主要由4极潜油电动机、保护器、联泵机构和专用螺杆泵总成组成,地面采用电潜泵现有的配套技术。
