单词	foot valve seat
释义	foot valve seat [化] 底阀座
随便看	Period Certain Period-certain annuity period channel period characterized by drop of the flame period charge period charges period cipher period closing activity period closing date period compounding period contract period control period cost period covered period cut period definition period delay period delay mechanism period demand period demand capture function period demand signal period-density relation period depreciation charge period depreciation charges period depreciaton charge fbzz fcaw fcaz fcbl fcby fccc fccd fccl fccm fcdc きょじょうきょじょう【居城】きょじんきょじん【巨人】きょすうきょすう【虚数】きょせいきょせいきょせいきょせい