pulsation

英

美

n.  搏动；脉冲；脉动；间断；（交流电的）角频率

复数：pulsations　

GRE化学

BNC.37980 / COCA.27303

柯林斯词典

• VERB （有节奏地）搏动，跳动，震动
  If somethingpulsates, it beats, moves in and out, or shakes with strong, regular movements.
  1. ...a star that pulsates.
     一颗脉动的恒星
  2. ...a pulsating blood vessel.
     搏动着的血管

英英释义

noun

• the rhythmic contraction and expansion of the arteries with each beat of the heart
  1. he could feel the beat of her heart
  Synonym:pulseheartbeatbeat
• (electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
  1. the pulsations seemed to be coming from a star
  Synonym:pulsingpulseimpulse
• a periodically recurring phenomenon that alternately increases and decreases some quantity

双语例句

• The result showed that the pump has the advantages of larger discharge and smaller pulsation.
  结果表明，该泵具有排量大、脉动小等优点。
• It is a wave, a vibration, a pulsation at the very heart of the All That Is.
  它是在一切万有心中的一个波动、一个震动、一个脉动。
• At low frequencies, such as 10 per sec., pulsation is sensed rather than vibration.
  在低频率（譬如每秒十次）时，所感觉到的是脉冲而非振动。
• Objective Discuss sterilization effect of B-class pulsation table top vacuum pressure steam sterilizer for dental handpiece.
  目的探讨B级脉动真空压力蒸汽台式灭菌器对牙科手机的灭菌效果。
• Steady delivery without pulsation, little vibration and noise.
  输送液体平稳、无脉动、振动小、噪音低。
• Analyses of the Gas Pulsation and Pipeline Vibration of Reciprocating Compressors and Solutions
  往复式压缩机气流脉动与管路振动问题分析与解决
• Reduced Torque Pulsation, thereby reduces noise in start-up and operation process.
  转矩脉动减少，起动和运行噪音更低。
• Simulation of transient state of hydraulic pulsation dampers with a CFD code was done to get their frequency response.
  对液压脉动衰减器用CFD软件进行了数值仿真计算，得到了其频率响应。
• Research on Instant Flow Characteristic and Pulsation of Arch Gear Pump
  弧齿齿轮泵瞬间流量及其脉动特性研究
• Piping vibration or damage caused due to dynamic loads, such as mechanical vibration, acoustic vibration, fluid hammer, pulsation and relief valve discharge.
  由于动荷载引起的管道震动和损坏，例如机械震动，声波震动，液击，压力脉动和泄放阀门泄放时引起的震动。