单词	imperfect arch
释义	imperfect arch 不完全拱
随便看	propeller root propeller rudder propeller runner propeller-runner propellers propeller scoop propeller screw propeller screw aperture propeller section propeller series propeller set propeller shaft bossing propeller shaft bracket propeller shaft cross propeller shaft driver propeller shaft hole propeller shafting propeller shaft lining propeller shaft nut propeller shaft pinion flange Propeller Shaft Rate propeller shaft revolution indicator propeller shafts propeller shaft safety strap propeller shaft skid