单词	naphthenes
释义	同naphthene
随便看	commutator subgroup commutator surface commutator switch commutator tag commutator transformer commutator tube commutator type analog digital converter commutator type frequency convertor commutator type function generator commutator type generator commutator undercutting machine commutator vee-ring commutator v ring commutator v ring insulation commutator v-ring insulation commutator wear commutator welding machine commute commute a payment commuted commuter commuter aircraft commuter airline commuter airplane commuter belt