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- The roots is the oldest type of positive displacement supercharger. 根是确定的最老的类型替代增压器。
- Slurry is metered to the tine by a positive displacement pump. 用一台容积泵测量泥浆尖头。
- Compressor may be reciprocating positive displacement or centrifugal. 压缩机可以是活塞式、螺杆式或离心式。
- Pumps in which displacement is accomplished mechanically are called positive displacement pumps. 用机械方法完成位移的泵称为正位移泵。
- The timing pump is a positive displacement pump set to ensure that product flows through the entire system at a predetermined and acceptable rate. 这种调速泵是一个容积式泵,用来确保产品以确定的可接受的速率流过整个设备。
- Most downhole power drills for horizontal drilling are constituted basically by positive displacement drills. 绝大多数的水平井井下动力钻具是以螺杆钻具为基础构成的。
- Results Gnathion and gonion showed positive displacement on X and Y axes and negative displacement on Z axis. 颏顶点、下颌角点均表现为X、Y轴向的正位移,Z轴向的负位移。
- Petroleum and natural gas industries - Rotary-type positive displacement compressors - Part 1: process compressors (oil-free). 石油和天然气工业。旋转型容积式压缩机。第1部分:加工压缩机(无油)
- When ready to start centrifugal pumps, fully open suction valves and throttle discharge valves of a positive displacement. 当准备好启动离心式泵时，吸入阀全开，容积式排出阀节流。（关于装置开车）
- The same powerful positive displacement blower technology used in large truck mounted vacuums is employed in the SAVE-YOUR-BACK-VAC. 吸尘器上还使用了同样强大的正排量鼓风机技术。
- The influence of the injected gas volume on the output performanc e of positive displacement motor (PDM) is obvious in the process of aerated UBD. 在充气欠平衡钻井过程中,气体的注入量对马达的输出特性影响较大。
- A rotor displacement in the negative direction produces a positive torque and a positive displacement results in a negative torque. 转子朝负向移动，产生正向扭矩，反之，朝正向移动就产生负向扭矩。
- Reciprocating Positive Displacement pumps may use plungers with static seals pistons with dynamic seals or liquid diaphragms to achieve their pumping action. 往复式正排量泵可能使用带有固定密封的活塞;带有动密封的活塞;或隔膜来运行水泵。
- The characteristics of positive displacement flow meter are introduced,and the main factors for lectotype and the matters needing attention in the application are discussed. 介绍了容积式流量计的特点,探讨了选型的主要因素和应用的注意事项。
- The positive displacement supercharger will move a fixed amount of air on each rotation and that is not dependant on impeller speed as it is on the centrifugal type. 积极的替代增压器将在每旋转上移动固定数量的空气和当它在离心上时，那不是关于叶轮速度的从属人打字。
- Since its first patent in January 1876, Norwalk Compressor Company has designed, manufactured, and serviced its own positive displacement reciprocating gas compressors. 始于1876年，诺沃克公司有了自己的第一个专利，诺沃克公司设计、制造并且服务自己公司的往复式工艺气体压缩机。
- Positive displacement main oil pump, mounted on bull gear shaft, oversize and arranged to protect the machine during coast down in the event of a power failure. 安装在大齿轮轴上的主油泵，超尺寸配置，以保护在突然停电时压缩机的充分润滑。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- Calculation results show that greater friction force exist between drill stem and wall of bore in tripping out and drilling using PDM (positive displacement motor) working conditions. 计算结果表明，起钻和井底动力钻具钻进两种工况，钻柱与井壁间有较大的摩擦力。
- A positive displacement (PD) pump displaces a precise amount of liquid for each revolution of the crankshaft and must be allowed to pump if it is running. 转轴每转一圈，正排量泵就排出精确数量的液体，而且必须是水泵运行中允许的。
