XNR-400熔体流速仪
XNR-400 melt flow index tester
流量表流速传感器
flow meter tachometer generator
零序电流速断保护
fast-tripping zero-sequence current protections
来流速度分布
inlet-air velocity distribution
环形雷射流速计
ring laser velocimeters， optical fiber laser gyros
呼气流速受限
expiratory flow limitation
呼气流速峰值
peak expiratory flow rate