bacteria bed | (n) layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms |
bacteria bed | (n) layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms |
マルタ熱 | [マルタねつ, maruta netsu] (n) Malta fever (variety of brucellosis caused by the bacteria Brucella melitensis) [Add to Longdo] |