扁圓頭螺栓 button head bolt: 圓頭螺栓round head button bolt: 圓頭螺栓button head: 半圓頭; 扁圓頭; 圓頭的button-head: 半圓頭的; 圓形端頭bolt head: 螺栓頭; 槍栓頭下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
