权威例句
ENDLESS BUCKET DREDGE WITH ARTICULATED LADDER AND SWELL COMPENSATORDynamic analysis of a semisubmersible-type bucket-ladder dredge /Bucket ladder dredge for harbor deepeningEnvironmental benefits of the bucket ladder dredgeBucket-Ladder suction dredgeBuckets of gold a conference to commemorate the New Zealand invention of the bucket ladder Gold DredgeDredge ladder shock mounting arrangementsBucketladder and PaydirtModern bucket ladder dredges - An innovative experienceNew Dredge Concepts and Designs for Placer Mining Applications