单词	form drag
释义	form drag 形阻力
随便看	single-tool single-tool axle lathe single tool axle lathe single tool holder single-tool holder single tooth single-tooth cutter single-tooth ripper single-tooth type single tooth X-ray apparatus single topping single total adding machine single touch single tow single-tower singlet oxygen singlet oxygen generator singlet positronium single-trace magnetic head singletrack single track single-track single track all-relay semi-automatic block system single track bridge single-track bridge 印累绶若危危1 危2 危3 危4 危于累卵危在旦夕危如朝露危如累卵修道修道院修錬修飾修飾語修養修験俯く俯け俯ける