A.橢圓齒輪流量計(jì)B.孔板流量計(jì)C.科式力質(zhì)量流量計(jì)D.漩渦流量計(jì)
A.絕對(duì)壓力B.表壓力C.超壓D.負(fù)壓或真空度
A.膜片B.膜盒C.波紋管D.彈簧管