词汇	air tight seal
释义	air tight seal 密封,气密
随便看	sulphur dark-blue sulphur dark-green sulphur deal with contacts craft sulphur deficiency Sulphur deleadization sulphur-dependent archaebacteria sulphur deposition sulphur determination sulphur determination apparatus Sulphur determinator sulphur dibromide sulphur dichloride sulphur dioxde sulphur dioxide sulphur-dioxide sulphur dioxide absorber sulphur dioxide blower sulphur-dioxide corrosion testing chamber sulphur dioxide derivative sulphur dioxide gas injury sulphur dioxide or smoke samplers sulphur dioxide pollution sulphur dioxide preparation sulphur dioxide probe sulphur dioxide recovery