Place toothed segment on the cast strut .

将定齿器放在铸铁柱上。

Curvilinear toothed synchronous belt drive systems .

曲线齿状同步带传动系统。

A toothed metal band driven by two wheels .

由两个轮子驱动的带锯齿的钢带。

Roughly speaking , these animals filled the ecological niches now occupied by toothed cetaceans such as dolphins and killer whales .

大致上讲，这些动物填补了由现代齿鲸目动物海豚和虎鲸所占据的生态龛位。

Toothed frogs : terrestrial or aquatic or arboreal .

有牙齿的蛙；陆栖、水栖或树栖。