单词	lava plug
释义	lava plug 熔岩岩颈
随便看	valve oil shield valve open valve opening valve-opening diagram valve-opening period valve-opening pressure valve-opening time valve-operated water closet valve operating diagram valve operating gear valve operating mechanism valve operating piston valve-operating stud valve operation mechanism valve operation test valve operator valve operator adapter valve orifice valve oscillator valve-out valve outer chamber valve outer chamber cover valve outer spring valve outlet Mach number valve overlap 谈议风生谈论风生谈过其实谈霏玉屑谉谊谊1 谊2 谊3 谊4 凹心凹槽凹版凹瓦凹角凹透镜凹镜凹陷凹雕凹面