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metering device     
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  计量装置
     Problems of Metering Device in 220 kV and over Power Grid of Jilin Province
     吉林省220kV及以上电网计量装置存在的问题
短句来源
     The Research of Monitor System for Electric Energy Metering Device Based on PCI Bus
     基于PCI总线的电能计量装置监测系统的研究
短句来源
     Power Metering Device Facing 21st Century——Discussion on Development and Prospect for Power Metering Device
     面向21世纪的电能计量装置——浅谈电能计量装置的发展与未来
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     How to Select Automatic Metering Device of Oil Tank
     如何选择油罐自动化计量装置
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     Application of Three-Vessel Gas-Displace-Liquid Continuous Metering Device
     三容器气替液连续计量装置的应用
短句来源
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  测量装置
     Intelligent metering device in oilfield metering station
     油田计量站智能液量测量装置
短句来源
     By means of analyzing the resultant error in electric energy metering device,we could find out the composite factors for generated error by electric energy metering device,put forward the measures on error reduction and promote the accuracy of elctric energy metering device.
     通过对电能测量装置综合误差分析 ,找出电能测量装置产生误差的综合因素 ,提出减少综合误差的措施 ,提高电能测量装置的准确度
短句来源
  计量仪表
     The Selection of the Gas Metering Device of the Roaster
     焙烧炉煤气计量仪表的选用
短句来源
     In view of the refinery crude oil incoming,the material balance,the energy consumption,the product leaving the plant and so on in the metering device management,the application of the metering device network management system that is combined by local intelligence metering instrument based on iFix software,the RS-485 interface communication,computer data acquisition,the local area network and the internet technology is introduced.
     针对原油输入,物料平衡,能量消耗,产品出厂等计量仪表的管理,介绍了一种基于iFix软件中的由现场智能计量仪表组成的计量仪表网络管理系统的应用,同时介绍了RS-485通讯接口,计算机数据采案,局域网和Interhet技术。
短句来源
     The data acquisition and transmission of family metering device is an importmant part of intelligent plot.
     家庭计量仪表(主要是:水、电、热、煤气表)的数据采集和传输是智能化小区建设中重要的环节。
短句来源
     Many non-linear loads, such as computer, speed controlled motor, electric stove, rectifier power source and many power electronic installations, can produce the harmonic current and the harmonic voltage in the electrical network, cause harmonic pollution, deteriorate power quality and influence to the work of the electric transmission equipment, the measuring device, the communication equipment, the metering device and relay protection.
     各种非线性负荷(如计算机、调速电机、电炉、整流电源以及包括FACTS在内的各种电力电子设备等)的使用会在电网中产生谐波电流和谐波电压,造成谐波污染,使电能质量下降,对输电设备、测量仪器、通讯设备、计量仪表、继电保护装置等都将产生不同程度的影响。
短句来源
  “metering device”译为未确定词的双语例句
     Experimental Study on 2QXP-1 Type Suction-seed Metering Device
     2QXP-1型气吸式排种器的初步试验
短句来源
     Automatic metering device in oilfield metering station
     油田计量站自动测量装置
短句来源
     Study on Key Technology of Mechanical Precision Metering Device
     机械式精密排种器关键技术研究
短句来源
     Experimental Research of De-rowing Qualification about 2QXP-1 Type Two-row Suction Seed Metering Device
     2QXP-1型双条气吸式排种器分条性试验
短句来源
     Experimental Study on the Factors of Seeding Quality about Air-suction Metering Device
     气吸式排种器排种质量影响因素的试验研究
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  metering device
Performance metering device (PMD) for conveyers with varying angle of inclination
      
Investigation of a metering device for bulk materials having a frequency pickup
      
Water will be applied using a portable sprinkler system with a metering device built at K-State.
      
The seeder box has a metering device for dispensing various toxic baits at desired rates.
      
The process gas is introduced through a gas control module to a manifold system containing a gas heater and powder-metering device.
      
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There are many factors affecting the characteristics of the suction-type metering device for precision drill. The important one is the vacuum degree or suction power of the vacuum chamber. In this paper emphasis is placed on the principle analyse of suction-type metering device with vertical disk for precision drill, and the derivaling a formula for calculating the vacuum degree of vacuum chamber. And by means of preliminary laboratory work, and the analysis of its results some relationships of those...

There are many factors affecting the characteristics of the suction-type metering device for precision drill. The important one is the vacuum degree or suction power of the vacuum chamber. In this paper emphasis is placed on the principle analyse of suction-type metering device with vertical disk for precision drill, and the derivaling a formula for calculating the vacuum degree of vacuum chamber. And by means of preliminary laboratory work, and the analysis of its results some relationships of those factors mentioned above to the vacuum degree were found, and may be used for reference in the design of such kind of metering devices.

影响气吸式排种器排种性能的因素很多,而决定吸力的吸室真空度是很重要的因素。本文着重对垂直圆盘式气吸排种器进行理论分析,推导出确定吸室真空度的计算式,并通过初步试验,分析了与吸室真空度有关的影响因素,为设计垂直圆盘式气吸排种器提供了部分依据。

The grinder plate type seed inetering device is a new type of feeding device used for planting wheat, sorghum, rice, pea, bean, rape, millet and flaxseed with a better uniformity of seed distribution.The seed hopper used for grinder plate type metering device can be also used for the edge-dropplate seed-metering device for hill-drop or single feed of corn and the reverse-feed droping mechanism for drilling undelinted cottonseed.This paper describes the structural parameters, technology of the metering...

The grinder plate type seed inetering device is a new type of feeding device used for planting wheat, sorghum, rice, pea, bean, rape, millet and flaxseed with a better uniformity of seed distribution.The seed hopper used for grinder plate type metering device can be also used for the edge-dropplate seed-metering device for hill-drop or single feed of corn and the reverse-feed droping mechanism for drilling undelinted cottonseed.This paper describes the structural parameters, technology of the metering process and technical characteristics of the grinder plate type seed metering device.

磨盘排种器是一种新型排种器。它可以条播小麦、高粱、谷子、油菜、豆类、水稻等作物,适应性较广,播种质量较好。按其结构特点,已与水平圆盘排种器和倒转喂入排种器组成适应性很广的万能(或通用)排种器,因而还可以单粒或穴播玉米、大豆、脱绒棉籽。本文简要介绍磨盘排种器的结构参数、排种工艺过程和技术性能。

In this paper the general working principles of pneumatic seed-metering device was analysed by tne principle of fluid mechanics. In certain conditions pressure and velocity distribution of air flow inside the conical holes of the seed-metering wheel can be analysed and calculated approximately as in an angular region. The calculated results of air pressure distribution fit pretty well with the measured data in the actual experiments.The basic working principles of the pneumatic seed-metering devices...

In this paper the general working principles of pneumatic seed-metering device was analysed by tne principle of fluid mechanics. In certain conditions pressure and velocity distribution of air flow inside the conical holes of the seed-metering wheel can be analysed and calculated approximately as in an angular region. The calculated results of air pressure distribution fit pretty well with the measured data in the actual experiments.The basic working principles of the pneumatic seed-metering devices thus seems have already been found out. Based on a great deal of experimental data, an analysis about the effect of the dimensions of the conical holes on seed-metering performance has been made and the design criteria of those dimensions have been developed. Therefore this paper provides a preliminary theore-tical basis for the design of pneumatic seed-metering device.

本文运用流体力学的基本原理,对气吹式排种器的工作情况进行了分析。论证了在一定条件下,排种器锥孔中的压力和速度分布可以近似的按角形域进行分析和计算。实际测定结果表明,锥孔中的压力分布规律和理论计算结果基本上一致,从而阐明了气吹式排种器工作过程的实质。根据试验数据,分析了锥孔的结构参数对排种质量的影响,提出了确定气吹式排种器锥孔结构参数的原则,为气吹式排种器的设计提出了初步的理论依据。

 
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