单词	ring nut
释义	ring nut [机] 环螺帽
随便看	safety nuts safety of civil aviation safety of crew safety officer safety of flight safety of flight addendum safety of flight (sof) safety of goods safety of human body safety of human life safety of income-principal safety of life at sea safety of life of person on board safety of lives safety of maritime navigation safety of navigation safety of nuclear power plant safety of operation safety of person safety of principal safety of property at sea safety of railway traffic safety of ship Safety of Ships Law safety of traffic cyfx cygd cygj cygs cygw cygx cygy cyhk cyhlmyql cyhlszql 口答口答え口答エ口籠もる口籠モル口糧口約口約束口紅口絵