pole head
plural of plug valve
Any of the Heliobacteriaceae, a family of photoheterotrophic bacteria, using bacteriochlorophyll to convert light energy into chemical energy, exclusively in anaerobic conditions
Alternative form of polehead
(zoology) Any water snail in the family Chilinidae.
技術者は街路灯を再設置する前に支柱の頭部にあるボルトを締めた。
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