1.[数学] tangent plane2.(剖面)section3.(面条) cut noodles; machine-made noodles单切面: uniplanar端切面: end cut额切面: frontal section; sectio frontalis光切面: optical section; opticalsection横切面: [生物学] transection; cross section下载手机词典可随时随地查词查翻译