Continuous-bucket dredger and Chain-bucket dredger

Chain-bucket dredger and continuous-bucket dredger are semantically related. In some cases you can replace phrase "Chain-bucket dredger" with "Continuous-bucket dredger", this phrases are similar.

Continuous-bucket dredger and chain-bucket dredger are semantically related. Sometimes you can replace phrase "Continuous-bucket dredger" with "Chain-bucket dredger", this phrases are similar.