英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

contractive    
a. 收缩的,有收缩性的

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Tachometer working principle and types - AutomationForum
    This posts explains the working principle of tachometer with types in detail Also real time application is discussed
  • Tachometer: Rotation measurement Techniques-Magnetic and Optical method . . .
    Measuring the speed of rotation is an important parameter in production industries Tachometers are the instruments used to measure the rotational speed There are two types of tachometer based on the working principle; Magnetic and Optical Magnetic Tachometer: One of the most common transducers for measuring the angular speed of a rotating member (gear, shaft, […]
  • What is Weigh Feeder? - AutomationForum
    A tachometer is a type of speed sensor to measure the speed of the belt The product of two variables such as the speed of the conveyor belt and the exact weight of material gives the mass flow rate of solid material through the weigh feeder The mass flow rate of solid material is given by the following relation
  • Introduction to Tachogenerators | Instrumentation and Control Engineering
    An electromechanical generator is a device capable of producing electrical power from mechanical energy, usually the turning of a shaft When not connected to a load resistance, generators will generate voltage roughly proportional to shaft speed With precise construction and design, generators can be built to produce very precise voltages for certain ranges of shaft […]
  • Theory of Vibration sensors | Instrumentation and Control Engineering
    Introduction Sensors used to measure vibration come in three basic types: displacement, velocity, and acceleration Displacement sensors measure changes in distance between a machine’s rotating element and its stationary housing (frame) Displacement sensors come in the form of a probe that threads into a hole drilled and tapped in the machine’s frame, just above the […]
  • Excel表格如何求和？ - 百度经验
    在Excel表格中求和有多种方法，以下是几种常见且简便的求和操作： 1 自动求和功能： 点击你想要放置求和结果的空白单元格，通常位于要求和数据区域的下方或右侧。 点击菜单栏上的“开始”选项卡，在“编辑”区域找到并点击“自动求和”按钮（图标为Σ）。 如果Excel识别到了相邻的数据区域
  • Transducer and its classification - AutomationForum
    What is a transducer The electrical transducer is a device which can be used to convert a non-electrical physical quality like temperature, sound or light… into an electrical signal such as voltage and current It can also be described as a device which is capable to convert physical quantity into a proportional electrical quantity such […]
  • Types of Sensors used in Vibration Measurement - AutomationForum
    This posts explains about the vibration measurement with use of accelerometer , velocity sensor and displacement transducer
  • 电脑文件夹怎样自定义排序 - 百度经验
    电脑文件夹怎样自定义排序？在使用电脑时，经常需要将多个文件夹或者文件进行自定义排序，那么怎么操作呢？请看下文。
  • Density measuring devices | Instrumentation and Control Engineering
    Introduction In this session we are going to discuss about density measuring devices ,before that we need to go through the basics Density ? of a material is defined as the mass per unit volume Units of density are pounds (slug) per cubic foot [lb (slug) ft3] or kilogram per cubic meter (kg m3) Specific weight ? is defined […]





中文字典-英文字典  2005-2009