词汇	生态结构
释义	生态结构医ecological structure
随便看	velocity geophone velocity gradient velocity gradient criterion of flashback velocity-gradient criterion of flashback velocity gradient dependent viscosity velocity gradient field velocity-gradient map velocity gradient tensor velocity-graph Velocity Gravity velocity head velocity-head velocity head coefficient velocity-head coefficient velocity-head correction factor velocity head flowmeter velocity head graph velocity head loss velocity-head rod velocity head tachometer velocity-head tachometer velocity-height absorptivity-emissivity velocity /height meter velocity-height ratio velocity-height-ratio