英语词汇“棉大夫”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	棉大夫
释义	棉大夫 mián dài fū七星瓢蟲。成蟲體呈卵圓形，背面半球形拱起。頭部黑色。足黑色，密生細毛。鞘翅紅色或橙黃色，上有七個黑點，故名。捕食棉蚜、豆蚜、槐蚜、桃蚜等，為著名的農業益蟲。
随便看	threephase rheostat three-phase rotating armature three phase rotating field three-phase rotor three phases Three Phases three-phases three phases alternating current three-phase sampling three phases and five columns three phases common enclosure Three Phases Current Balance three phases device replace problem three-phase semicontrol bridge Three phases enhancement scanning three-phase separation three-phase separation region sludge layer three phase separator three-phase separator threephase series commutator motor three phase series commutator motor three-phase series commutator motor threephase series motor three phase series motor three-phase series motor